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    1. Heard BE, El Hassan AM, Wilson SM. Pulmonary cytomegalic inclusion-body disease in a diabetic. J Clin Pathol. 1962;15(1):17-20.
    2. El Hassan AM. Salivary gland tumours in the Sudan. Sud Med J. 1962; 1(3).
    3. El Hassan AM. Multicentric sarcoma of the jaw. Sud Med J. 1962; (1)168.
    4. Lynch JB, Verzin JA, El Hassan AM. Cancer of the female genital tract among the Sudanese. BJOG. 1963; 70(3);495-504.
    5. Lynch JB, Omar A, El Hassan AM.. Cancer in the Sudan. Sud Med J. 1963;2:29-37.
    6. El Hassan AM. Inhibition and enhancement of the Landschuts ascitis tumour. Proceedings International Congress of Chemotherapy, Stuttgart, Germany, 1963.
    7. El Hassan AM, Stuart AE. Inhibition and enhancement of a mouse ascites tumour after treatment with living lymphoid cells. Lancet. 1963; 2(7306):496-7..
    8. Stuart AE, El Hassan AM. Specific Inhibition of the Landschuts tumour an isogenic cellular system. Lancet. 1964; 1(7339):913-4..
    9. El Hassan AM. The Pathology of the Land schuts ascites tumour. Brit J Cancer. 1964;28: 551.
    10. El Hassan AM. Cancer of the bladder in the Sudanese and its relationship to Bilharziasis. Al-Hakeem. 1964; 20.
    11. El Hassan AM. Changes in the lympho-reticular tissues of mice bearing the Landschuts tumour. Br J Cancer. 1965;19:343.
    12. Stuart AE, El Hassan AM. Survival of isogeneic splenic grafts. J Pathol Bacteriol. 1965; 90(2):664-6..
    13. El Hassan AM. Pathological aspects of Schistosomiasis in Sudan. Al-Hakeem. 1966; 20.
    14. El Hassan AM. Aortic onchocerciasis due to onchocerca armillatta in Sudan cattle. Sud. Med. J. 1966; 4: 147.
    15. El Hassan AM, Stuart AE. Inhibition and enhancement of the Landschütz ascites tumour with lymphoid cells. J Pathol Bacteriol. 1966; 91(1):11-31..
    16. El Hassan AM. A comparative study of the DNA complement of malignant tumours. Sud Med J. 1966; 4.
    17. El Hassan AM. Malignant disease in Sudanese children. Sud Med J. 1967;5(2): 68-75.
    18. Ismail SA, El Hassan AM. Unusual forms of cardiomyopathy. Sud Med J. 1967; 5(2):46-67.
    19. El Hassan AM. Oral and Oropharyngeal tumours in the Sudan. Sud Med J. 1967;5.
    20. El Hassan AM. Contribution to the pathological aspects of Ainhum. Sud Med J. 1967; 5: 82-87.
    21. El Hassan AM. Bilharziasis in the Sudan. Cs. Patal. 1967; 3(4): 244 – 252.
    22. Wasfi AI, El Hassan AM, Zak F. Kaposi's sarcoma in the Sudan. Sud Med J. 1967; 5(4): 213 - 22.
    23. El Hassan AM. Malignant disease of the upper respiratory tract. Proceeding of the Conference of Cancer in East Africa, Nairobi, 1968.
    24. El Hassan AM. Aspects of malignant disease in the Sudan. Proceedings of the Conference on Cancer in East Africa, Nairobi, 1968.
    25. El Hassan AM, Godber MG, Kopec AC, Mourant AE, Tills D, Lehmann H. The hereditary blood factors of the Beja of the Sudan. Man. 1968; 3 (2):272-283 .
    26. El Hassan AM. Non-healing midline granuloma. Sud Med J. 1968; 6.
    27. El Hassan AM. Autopsy findings in Khartoum. Sud Med J. 1968; 6.
    28. Milosev B, Daoud EH, El Hadi A, El Hassan AM, Sati MH. Mucosal leishmaniasis in the Sudan. Ann Trop Med Parasitol. 1969; 63(1):123-8..
    29. Milošev B, Daoud EH, El Hadi A, El Hassan AM, Sati MH. Mucosal leishmaniasis in the Sudan. Ann Trop Med Parasitol, 1969; 63:123-128.
    30. Mahgoub el-S, Ismail SA, El Hassan AM. Cervical lymphadenopathy caused by Aspergillus terreus. Br Med J. 1969; 1(5645):689-90. .
    31. Milosev B, el-Mahgoub S, Aal OA, El Hassan AM. Primary aspergilloma of paranasal sinuses in the Sudan. A review of seventeen cases. Br J Surg. 1969; 56(2):132-7..
    32. El Hassan AM. White bile in Sudanese patients with cholelithiasis. Ain. Shams. Med. J. 1969; 20.
    33. El Hassan AM, Arbab B, Mahgoub ES, Wahab S. Phycomycosis. Trans R Soc Trop Med Hyg. 1970; 64(1):134-7..
    34. El Hassan AM. Tumoral calcinosis. Sud Med J. 1971;9:133.
    35. El Hassan AM, Mahgoub ES. Lymph node involvement in mycetoma. Trans R Soc Trop Med Hyg. 1972;66(1):165-9.
    36. El Hassan AM, Wasfi A. Cardiovascular disease in Khartoum, post-mortem and clinical evidence. Trop. Geogr. Med. 1972; 24(2):118-123.
    37. Mahgoub ES, El Hassan AM. Pulmonary aspergillosis caused by aspergillus flavus. Thorax. 1972; 27(1):33-37 .
    38. El Hassan AM. Hycanthone trial in the treatment of Schistosoma mansoni infection in the Sudan. J Trop Med & Hyg. 1972; 75:165-8.
    39. Veress B, Malik OA, el-Tayeb AA, el-Daoud S, Mahgoub ES, El Hassan AM. Further observations on the primary paranasal aspergillus granuloma in the Sudan: a morphological study of 46 cases. Am J Trop Med Hyg. 1973; 22(6):765-72.
    40. Abdalla RE, Ali M, Wasfi AI, El Hassan AM. Cutaneous leishmaniasis in the Sudan. Trans R Soc Trop Med Hyg. 1973; 67(4):549-59..
    41. Omer A, el-Shazali H, el-Karim OA, El Hassan AM. Studies on the anaemia of kwashiorkor and marasmus in the Sudan. J Trop Pediatr Environ Child Health. 1973; 19(2):91-7..
    42. El Hassan AM. Arterial changes in Kala-azar. Act Morph Acad Sci Hung. 1973;14: 32.
    43. Veress B, Malik MO, Satir AA, El Hassan AM. Morphological observations on visceral leishmaniasis in the Sudan. Trop Geogr Med. 1974; 26(2):198-203.
    44. Malik MO, Hidaytalla A, Daoud EH, El Hassan AM. Superficial cancer in the Sudan. A study of 1225 primary malignant superficial tumours. Br J Cancer. 1974;30(4):355-64.
    45. El Hassan AM. Adenoacanthoma in endometriosis of the broad ligament. Sud Med J. 1974; 12: 22-25.
    46. Ahmed MA, El Hassan AM, Mustafa MD, Omer A, Satir A. Proceedings: Some blood characteristics in the major tribes of the Sudan. West Afr J Pharmacol Drug Res. 1974; 2(1):110P.
    47. El Hassan AM. Preliminary report on the pathology of the nephrotic syndrome in Sudanese patients. West Afr J Pharmacol Drug Res. 1974; 2:111.
    48. Malik MO, Veress B, Daoud EH, El Hassan AM. Pattern of bladder cancer in the Sudan and its relation to schistosomiasis: a study of 255 vesical carcinomas. J Trop Med Hyg. 1975; 78(10-11):219-23.
    49. Abdalla RE, El Hadi A, Ahmed MA, El Hassan AM. Sudan mucosal leishmaniasis. Trans R Soc Trop Med Hyg. 1975; 69(5-6):443-9.
    50. Malik MO, Satir AA, Veress B, El Hassan AM. Some aspects of the surgical pathology of schistosomiasis in the Sudan. East Afr Med J. 1975; 52(4):184-95. PMID: 1175491.
    51. Ramadan RD, El Hassan AM. Letter: Leiomyoma in the cervix and hyperplastic ectopic mammary tissue in a goat. Aust Vet J. 1975; 51(7):362.
    52. Malik MO, Veress B, Daoud EH, El Hassan AM. Pattern of bladder cancer in the Sudan and its relation to schistosomiasis: a study of 255 vesical carcinomas. J Trop Med Hyg. 1975; 78(10-11):219-23.
    53. Veress B, Malik MO, Satir AA, El Hassan AM. Burkitt's lymphoma in the Sudan. Afr J Med Med Sci. 1976; 5(2):115-9.
    54. Veress B, Malik MO, El Hassan AM. Tumoural lipocalcinosis: a clinicopathological study of 20 cases. J Pathol. 1976; 119(2):113-8..
    55. Veress B, Omer A, Satir AA, El Hassan AM. Morphology of the spleen and lymph nodes in fatal visceral leishmaniasis. Immunology. 1977; 33(5):605-10.
    56. Mahgoub ES, Gumaa SA, El Hassan AM. Immunological status of mycetoma patients. Bull Soc Pathol Exot Filiales. 1977; 70(1):48-54.
    57. Hamza YO, Abdalla RE, Ahmed MA, Abdelwahab SM, Omer A, Abdelnur OM, El Hassan AM. Northward spread of visceral leishmaniasis in the Sudan. Trans R Soc Trop Med Hyg. 1976; 70(3):266.
    58. Hassan AM, Satir AA, Ahmed MA, Omer A. The pathology of schistosomiasis in Sudan. Trop Geogr Med. 1977; 29(1):56-64.
    59. Veress B, Musa AR, Osman H, Asha A, Saddig EW, El Hassan AM. The nephrotic syndrome in the Sudan with special reference to schistosomal nephropathy. A preliminary morphological study. Ann Trop Med Parasitol. 1978; 72(4):357-6.
    60. Gumaa SA, Mohamed FH, Mahgoub ES, Adam SE, El Hassan AM, Imbabi SE. Mycetomas in goats. Sabouraudia. 1978;16(3):217-23.
    61. El Hassan AM. Studies of cutaneous leishmaniasis in northern Sudan. Ann. Trop. Med. & Parasitol. 1978; 72:349-352.
    62. Veress B, Abdalla RE, El Hassan AM. Electron microscope investigations on leishmaniasis in the Sudan: II: Ultrastructural morphology of macrophage-parasite interaction in human and hamster macrophages in vivo. Annals of Tropical Medicine & Parasitology. 1981; 75(6):607-13.
    63. Ahmed MA, Abdel Wahab SM, Abdel Malik MO, Abdel Gadir AM, Salih SY, Omer A, El Hassan AM. Louse-borne relapsing fever in the Sudan. A historical review and a clinico-pathological study. Trop Geogr Med. 1980; 32(2):106-11..
    64. Musa AR, Veress B, Kordofani AM, Asha HA, Satir A, El Hassan AM. Pattern of the nephrotic syndrome in the Sudan. Ann Trop Med Parasitol. 1980; 74(1):37-44..
    65. Ramadan RO, El Hassan AM. Fibrous Epulis in a one-humped camel (Camelus dromedarius). Zentralbl Veterinarmed A. 1980; 27(8):875-7. .
    66. Veress B, Abdalla RE, El Hassan AM. Electron microscope investigations on leishmaniasis in the Sudan: II. Ultrastructural morphology of macrophage-parasite interaction in human and hamster macrophages in vivo. Ann Trop Med Parasitol. 1981; 75(6):607-13..
    67. Tageldin MH, El Hassan AM, Mustafa IE. Spontaneous release of mycophages from lysogenic bovine strains. Tubercle. 1981; 62(4):263-9..
    68. El Hassan AM, Tag El Deen MH. Primary intestinal tuberculosis in the Sudan. Ann Trop Med Parasitol. 1982; 76(3):317-22.
    69. El Hassan AM. Expanding clinical spectrum of cutaneous leishmaniasis in Saudi Arabia. Proceedings of the 8th Saudi Medical Conference, 1982.
    70. El Hassan AM. The pathology of cutaneous leishmaniasis in Saudi Arabia. Proceedings of the 8th Saudi Medical Conference, 1982.
    71. El Hassan AM. Expanding clinical spectrum of cutaneous leishmaniasis in Saudi Arabia. In: Second Annual Progress Report of the National Leishmaniasis Research Project. Riyadh, Saudi Arabia: Saudi National Centre for Science and Technology, pp. 123-143. , 1983.
    72. Veress B, Abdalla RE, El Hassan AM. Visceral spreading depletion of thymus-dependent regions and amyloidosis in mice and hamsters infected intradermally with Leishmania isolated from Sudanese cutaneous leishmaniasis. Br J Exp Pathol. 1983 ; 64(5):505-14.
    73. El Hassan AM, Veress B, Kutty MK. The ultrastructural morphology of human cutaneous leishmaniasis of low parasite load. Acta Derm Venereol. 1984; 64(6):501-5.
    74. El Hassan AM. Abdominal tuberculosis. Postgraduate Doctor. 1984; 7:718-724.
    75. Gumaa SA, El Hassan AM. The pathology of Aspergillus flavus infection in uncompromised host. East Afr Med J. 1984; 61(11):837-42.
    76. Ahmed MA, Omer A, el Hassn AM. Malignant lymphomas at the Pathology Department, University of Khartoum, Sudan. East Afr Med J. 1984; 61(8):627-31.
    77. Veress B, El Hassan AM. Immunohistochemical demonstration of S-100 protein antigen-containing cells in chronic cutaneous leishmaniasis. Acta Pathol Microbiol Immunol Scand A. 1985; 93(6):331-4.
    78. Saad AM, el Masri SH, Omer AH, El Hassan AM. A clinico-pathological study on intestinal bilharziasis in the Sudan. East Afr Med J. 1985; 62(6):397-402.
    79. Veress B, Hassan AME. Vascular changes in human leishmaniasis: a light microscope and immunohistological study. Annals of Tropical Medicine & Parasitology. 1986; 80(2):183-8.
    80. El Hassan AM. Dermal and mucosal leishmaniasis in the Sudan in "Leishmaniasis in Saudi Arabia" published by the Saudi Ministry of Health, 1986.
    81. El Hassan AM. Ketoconozole in cutaneous leishmaniasis: results of a pilot study. Saudi Med. J. 1986; 7: 596-604.
    82. Veress B, El Hassan AM, Kutty MK, Al-Gindan Y, Kubba R, Omer AE. Immunohistological investigations in chronic cutaneous leishmaniasis in Saudi Arabia. Trop Geogr Med. 1986; 38(4):380-5.
    83. El Hassan AM, Kubba R, Al-Gindan YM, Omer AS, Kutty MK, Saeed MB. Lymphocyte phenotypes and HLA-DR expression in the lesions of cutaneous leishmaniasis and their draining lymph nodes. Annals of Saudi Medicine. 1987; 7(3):212-20.
    84. Kubba R, El‐Hassan AM, Path FR, Al‐Gindan Y, Omer AH, Kutty MK, Path FR, Saeed MB. Dissemination in cutaneous leishmaniasis I. Subcutaneous nodules. International journal of dermatology. 1987; 26(5):300-4.
    85. Kubba R, El‐Hassan AM, Al‐Gindan Y, Omer AH, Bushra M, Kutty MK. Peripheral nerve involvement in cutaneous leishmaniasis (Old World). International journal of dermatology. 1987; 26(8):527-31.
    86. Ramadan RO, El Hassan AM, Abdin-Bey R, Algasnawi YA, Abdalla ES, Fayed AA. Chronic obstructive mastitis in the camel. A clinicopathological study. The Cornell Veterinarian. 1987; 77(2):132-50.
    87. Elbihari S, Cheema AH, El Hassan AM. Leishmania infecting man and wild animals in Saudi Arabia. 4. Canine cutaneous leishmaniasis in the Eastern Province. Transactions of the Royal Society of Tropical Medicine and Hygiene. 1987; 81(6):925-7.
    88. Elbihari S, El Hassan AM. The histopathology of naturally-occurring cutaneous leishmaniasis in the reservoir host, Psammomys obesus. Bulletin de la Societe de Pathologie Exotique et de ses Filiales. 1987; 80(4):615-23.
    89. Ramadan RO, El Hassan AM, El Deen MT. Malignant melanoma in goats: a clinico-pathological study. J Comp Pathol. 1988; 98(2):237-46.
    90. Kubba R, Al-Gindan Y, El Hassan AM, Omer AH. Clinical diagnosis of cutaneous leishmaniasis (oriental sore). J Am Acad Dermatol. 1987; 16(6):1183-9.
    91. Kubba R, El‐Hassan AM, Path FR, Al‐Gindan Y, Omer AH, Kutty MK, Path FR, Saeed MB. Dissemination in cutaneous leishmaniasis I. Subcutaneous nodules. Int J Dermatol. 1987; 26(5):300-4.
    92. Alayash AI, El Hassan AM, Omer R, Bonaventura J. Glycosylated haemoglobin: an indicator of long-term blood glucose in domestic sheep and goats. Comp Biochem Physiol A Comp Physiol. 1988; 90(2):229-31.
    93. Gumaa SA, Ahmed MA, Hassan ME, El Hassan AM. A case of African histoplasmosis from Sudan. Trans R Soc Trop Med Hyg. 1988;82(3):503-5.
    94. Kubba R, al-Gindan Y, El Hassan AM, Omer AH, Kutty MK, Saeed MB. Dissemination in cutaneous leishmaniasis. II. Satellite papules and subcutaneous induration. Int J Dermatol. 1988; 27(10):702-6.
    95. Ramadan RO, El Hassan AM. Intersexuality in goats. New Zealand Veterinary Journal. 1988; 36(3):120-4.
    96. Al‐Gindan Y, Kubba R, El Hassan AM, Omer AH, Kutty MK, Saeed MB. Dissemination in cutaneous leishmaniasis: 3. Lymph node involvement. Int J Dermatol. 1989; 28(4):248-54.
    97. Al-Gindan Y, Kubba R, Omer AH, El Hassan AM. Cryosurgery in old world cutaneous leishmaniasis. Br J Dermatol. 1988; 118(6):851-4.
    98. Satti MB, El Hassan AM, al-Gindan Y, Osman MA, al-Sohaibani MO. Peripheral neural involvement in cutaneous leishmaniasis. A pathologic study of human and experimental animal lesions. Int J Dermatol. 1989; 28(4):243-7.
    99. El Hassan AM, Ahmed MA, Rahim AA, Satir AA, Wasfi A, Kordofani AA, Mustafa MD, Wasfi S, Bella H, Karrar MO. Visceral leishmaniasis in the Sudan: clinical and hematological features. Ann Saudi Med. 1990; 10(1):51-6.
    100. El Hassan AM, Ghalib HW, Zylstra E, Eltoum IA, Ali MS, Ahmed HM. Post-kala-azar dermal leishmaniasis in the absence of active visceral leishmaniasis. Lancet. 1990; 336(8717):750.
    101. Zijlstra EE, Ali MS, El Hassan AM, el-Toum IA, Satti M, Ghalib HW, Sondorp E, Winkler A. Kala-azar in displaced people from southern Sudan: epidemiological, clinical and therapeutic findings. Trans R Soc Trop Med Hyg. 1991; 85(3):365-9.
    102. Zijlstra EE, Ali MS, El Hassan AM, el-Toum IA, Satti M, Ghalib HW, Kager PA. Direct agglutination test for diagnosis and sero-epidemiological survey of kala-azar in the Sudan. Trans R Soc Trop Med Hyg. 1991; 85(4):474-6.
    103. El Hassan AM, el-Sheikh EA, Eltoum IA, Ghalib HW, Ali MS, Zijlstra E, Satti MM. Post-kala-azar anterior uveitis: demonstration of Leishmania parasites in the lesion. Trans R Soc Trop Med Hyg. 1991; 85(4):471-3.
    104. Ramadan RO, Gameel AA, El Hassan AM. Squamous cell carcinoma in sheep in Saudi Arabia. Rev Elev Med Vet Pays Trop. 1991;44(1):23-6.
    105. El Hassan AM, Eltoum IA, el-Asha BM. The Marrara syndrome: isolation of Linguatula serrata nymphs from a patient and the viscera of goats. Trans R Soc Trop Med Hyg. 1991;85(2):309.
    106. El Hassan AM, Ali MS, Zijlstra E, Eltoum IA, Ghalib HW, Ahmed HM. Post-kala-azar dermal leishmaniasis in the Sudan: peripheral neural involvement. Int J Dermatol. 1992; 31(6):400-3.
    107. El Hassan AM, Ghalib HW, Zijlstra EE, Eltoum IA, Satti M, Ali MS, Ali HM. Post kala-azar dermal leishmaniasis in the Sudan: clinical features, pathology and treatment. Trans R Soc Trop Med Hyg. 1992; 86(3):245-8.
    108. Zijlstra EE, Ali MS, El Hassan AM, el-Toum IA, Satti M, Ghalib HW. Clinical aspects of kala-azar in children from the Sudan: a comparison with the disease in adults. J Trop Pediatr. 1992; 38(1):17-21.
    109. Eltoum IA, Zijlstra EE, Ali MS, Ghalib HW, Satti MM, Eltoum B, El Hassan AM. Congenital kala-azar and leishmaniasis in the placenta. Am J Trop Med Hyg. 1992; 46(1):57-62.
    110. Zijlstra EE, Ali MS, El Hassan AM, el-Toum IA, Satti M, Ghalib HW, Kager PA. Kala-azar: a comparative study of parasitological methods and the direct agglutination test in diagnosis. Trans R Soc Trop Med Hyg. 1992;86(5):505-7.
    111. Ghalib HW, Eltoum EA, Kroon CC, El Hassan AM. Identification of Leishmania from mucosal leishmaniasis by recombinant DNA probes. Trans R Soc Trop Med Hyg. 1992; 86(2):158-60.
    112. Abbas K, el Toum IA, El Hassan AM. Oral leishmaniasis associated with kala-azar. A case report. Oral Surg Oral Med Oral Pathol. 1992; 73(5):583-4.
    113. El Hassan AM, Hashim FA, Abdullah M, Zijlstra EE, Ghalib HW. Distinguishing post-kala-azar dermal leishmaniasis from leprosy: experience in the Sudan. Lepr Rev. 1993; 64(1):53-9.
    114. Zijlstra EE, Siddig Ali M, El Hassan AM, Hofland HW, el-Toum I, Satti M, Ghalib HW. The treatment of kala-azar in the Sudan with sodium stibogluconate: a randomized trial of three dosage regimens. Trans R Soc Trop Med Hyg. 1993; 87(3):307-9.
    115. Zijlstra EE, El Hassan AM. Leishmanin and tuberculin sensitivity in leishmaniasis in the Sudan, with special reference to kala-azar. Trans R Soc Trop Med Hyg. 1993; 87(4):425-7.
    116. El Hassan AM, Hashim FA, Ali MS, Ghalib HW, Zijlstra EE. Kala-azar in western Upper Nile province in the southern Sudan and its spread to a nomadic tribe from the north. Trans R Soc Trop Med Hyg. 1993; 87(4):395-8.
    117. El Hassan AM, Zijlstra EE, Meredith SE, Ghalib HW, Ismail A. Identification of Leishmania donovani using a polymerase chain reaction in patient and animal material obtained from an area of endemic kala-azar in the Sudan. Acta Trop. 1993; 55(1-2):87-90.
    118. Meredith SE, Zijlstra EE, Schoone GJ, Kroon CC, van Eys GJ, Schaeffer KU, El Hassan AM, Lawyer PG. Development and application of the polymerase chain reaction for the detection and identification of Leishmania parasites in clinical material. Arch Inst Pasteur Tunis. 1993;70(3-4):419-31.
    119. Ghalib HW, Piuvezam MR, Skeiky YA, Siddig MO, Hashim FA, El Hassan AM, Russo DM, Reed SG. Interleukin 10 production correlates with pathology in human Leishmania donovani infections. J Clin Invest. 1993; 92(1):324-9.
    120. Kadaro AY, Ghalib HW, Ali MS, Eltoum I, Ismail A, Gaafar A, Kemp M, Kordofani AA, Reed SG, El Hassan AM, et al. Prevalence of cutaneous leishmaniasis along the Nile River north of Khartoum (Sudan) in the aftermath of an epidemic in 1985. Am J Trop Med Hyg. 1993; 48(1):44-9.
    121. El Hassan AM, Gaafar A, Theander TG. Antigen‐presenting cells in human cutaneous leishmaniasis due to Leishmania major. Clinical & Experimental Immunology. 1995 Mar;99(3):445-53.
    122. El Hassan AM, Yagi HI, Zijlstra EE, El-Kadarow AI. Leishmaniasis of the nose caused by different species of Leishmania in the Sudan. Distinguishing features of the different clinical forms. Trop Geogr Med. 1994; 46(1):33-6.
    123. Zijlstra EE, El Hassan AM, Ismael A, Ghalib HW. Endemic kala-azar in eastern Sudan: a longitudinal study on the incidence of clinical and subclinical infection and post-kala-azar dermal leishmaniasis. Am J Trop Med Hyg. 1994; 51(6):826-36.
    124. Gaafar A, Fadl A, el Kadaro AY, el Hassan MM, Kemp M, Ismail AI, Morgos SA, El Hassan AM. Sporotrichoid cutaneous leishmaniasis due to Leishmania major of different zymodemes in the Sudan and Saudi Arabia: a comparative study. Trans R Soc Trop Med Hyg. 1994; 88(5):552-4.
    125. el Hag IA, Hashim FA, el Toum IA, Homeida M, el Kalifa M, El Hassan AM. Liver morphology and function in visceral leishmaniasis (Kala-azar). J Clin Pathol. 1994; 47(6):547-51.
    126. Hashim FA, El hassan AM. Tinea versicolor and visceral leishmaniasis. Int J Dermatol. 1994;33(4):258-9.
    127. Hashim FA, Ali MS, Satti M, El Hassan AM, Ghalib HW, el Safi S, el Hag IA. An outbreak of acute kala-azar in a nomadic tribe in western Sudan: features of the disease in a previously non-immune population. Trans R Soc Trop Med Hyg. 1994; 88(4):431-2.
    128. Ibrahim ME, Hag-Ali M, El Hassan AM, Theander TG, Kharazmi A. Leishmania resistant to sodium stibogluconate: drug-associated macrophage-dependent killing. Parasitol Res. 1994; 80(7):569-74.
    129. Gaafar A, Kharazmi A, Ismail A, Kemp M, Hey A, Christensen CB, Dafalla M, el Kadaro AY, El Hassan AM, Theander TG. Dichotomy of the T cell response to Leishmania antigens in patients suffering from cutaneous leishmaniasis; absence or scarcity of Th1 activity is associated with severe infections. Clin Exp Immunol. 1995; 100(2):239-45.
    130. Ahmed AI, Gadir AFA, Hashim FA, El Kadaro AY, Zijlstra EE & El Hassan AM. Clinical features and pathology of post-kala-azar dermal leishmaniasis (PKDL) in the Sudan. Sud Med J.1995; 33:7-12.
    131. El Hassan AM, Zijlstra EE, Ismael A, Ghalib HW. Recent observations on the epidemiology of kala-azar in the eastern and central states of the Sudan. Trop Geogr Med. 1995; 47(4):151-6.
    132. El Hassan AM, Meredith SE, Yagi HI, Khalil EA, Ghalib HW, Abbas K, Zijlstra EE, Kroon CC, Schoone GJ, Ismail A. Sudanese mucosal leishmaniasis: epidemiology, clinical features, diagnosis, immune responses and treatment. Trans R Soc Trop Med Hyg. 1995; 89(6):647-52.
    133. El Hassan AM, Zijlstra EE, Khalil EAG, Ghalib HW & Ismail A. The spectrum of Leishmania donovani infection in Salala village, Gedaref State. A longitudinal study.  Med. J. 1995;33:63-66.
    134. Hashim FA, Khalil EA, Ismail A, El Hassan AM. Apparently successful treatment of two cases of post kala-azar dermal leishmaniasis with liposomal amphotericin B. Trans R Soc Trop Med Hyg. 1995; 89(4):440.
    135. Zijlstra EE, El Hassan AM, Ismael A. Endemic kala-azar in eastern Sudan: post-kala-azar dermal leishmaniasis. Am J Trop Med Hyg. 1995;52(4):299-305.
    136. Hashim FA, Ahmed AE, El Hassan AM, el Mubarak MH, Yagi H, Ibrahim EN, Ali MS. Neurologic changes in visceral leishmaniasis. Am J Trop Med Hyg. 1995; 52(2):149-54.
    137. Ibrahim ME, Evans DA, Theander TG, El Hassan AM, Kharazmi A. Diversity among Leishmania isolates from the Sudan: isoenzyme homogeneity of L. donovani versus heterogeneity of L. major. Trans R Soc Trop Med Hyg. 1995; 89(4):366-9.
    138. Ghalib HW, Whittle JA, Kubin M, Hashim FA, El Hassan AM, Grabstein KH, Trinchieri G, Reed SG. IL-12 enhances Th1-type responses in human Leishmania donovani infections. The Journal of Immunology. 1995; 154(9):4623-9.
    139. ElHassan AM, Gaafar A, Theander TG. Antigen-presenting cells in human cutaneous leishmaniasis due to Leishmania major. Clin Exp Immunol. 1995; 99(3):445-53.
    140. El Hassan AM, Eltoum IA, el-Asha BM. The Marrara syndrome: isolation of Linguatula serrata nymphs from a patient and the viscera of goats. Trans R Soc Trop Med Hyg. 1991; 85(2):309.
    141. Fahal AH, el Hag IA, El Hassan AM, Hashim FA. Leishmanial cholecystitis and colitis in a patient with visceral leishmaniasis. Trans R Soc Trop Med Hyg. 1995; 89(3):284.
    142. Khalil EA, Nur NM, Zijlstra EE, El Hassan AM, Davidson RN. Failure of a combination of two antifungal drugs, terbinafine plus itraconazole, in Sudanese post kala-azar dermal leishmaniasis. Trans R Soc Trop Med Hyg. 1996; 90(2):187-8.
    143. Fahal AH, Yagi HI, El Hassan AM. Mycetoma-induced palatal deficiency and pharyngeal plexus dysfunction. Trans R Soc Trop Med Hyg. 1996; 90(6):676-7.
    144. Fahal AH, Sheikh HE, El Hassan AM. Pathological fracture in mycetoma. Trans R Soc Trop Med Hyg. 1996;90(6):675-6.
    145. Gaafar A, Ismail A, el Kadaro AY, Hashim E, Khalil EA, El Hassan AM. Necrotizing and suppurative lymphadenitis in Leishmania major infections. Trop Med Int Health. 1996; 1(2):243-50.
    146. El Hassan AM, Kadaru AM, Khalil EA, Fadl A, el Hassan MM. The pathology of cutaneous leishmaniasis in the Sudan: a comparison with that in other geographical areas. Ann Trop Med Parasitol. 1996;90(5):485-90.
    147. Yagi H, el Bahari S, Mohamed HA, Ahmed el-R S, Mustafa B, Mahmoud M, Saad MB, Sulaiman SM, El Hassan AM. The Marrara syndrome: a hypersensitivity reaction of the upper respiratory tract and buccopharyngeal mucosa to nymphs of Linguatula serrata. Acta Trop. 1996; 62(3):127-34.
    148. Fahal AH, Sharfi AR, Sheik HE, El Hassan AM, Mahgoub ES. Internal fistula formation: an unusual complication of mycetoma. Trans R Soc Trop Med Hyg. 1996; 90(5):550-2.
    149. Andresen K, Gaafar A, El Hassan AM, Ismail A, Dafalla M, Theander TG, Kharazmi A. Evaluation of the polymerase chain reaction in the diagnosis of cutaneous leishmaniasis due to Leishmania major: a comparison with direct microscopy of smears and sections from lesions. Trans R Soc Trop Med Hyg. 1996; 90(2):133-5.
    150. Jensen AT, Gaafar A, Ismail A, Christensen CB, Kemp M, El Hassan AM, Kharazmi A, Theander TG. Serodiagnosis of cutaneous leishmaniasis: assessment of an enzyme-linked immunosorbent assay using a peptide sequence from gene B protein. Am J Trop Med Hyg. 1996; 55(5):490-5.
    151. Osman OF, Oskam L, Zijlstra EE, Kroon NCM, Schoone GJ, Khalil EAG, El Hassan AM & Kager PA. Evaluation of the polymerase chain reaction for diagnosis of visceral leishmaniasis. J Clin Microbiol. 1997a; 35 (10), 2454-7.
    152. Osman OF, Kager PA, Zijlstra EE, El Hassan AM, Oskam L. Use of PCR on lymph-node sample as test of cure of visceral leishmaniasis. Ann Trop Med Parasitol. 1997; 91(7):845-50.
    153. El Hassan AM & Lamyaa AEl Hassan. Recent advances in visceral leishmaniasis. Alpa Adna Microbiology J. 1997; 6(1-2), 23-33.
    154. Ibrahim M, Suliman A, Hashim FA, Khalil el-T A, Evans DA, Kharazmi A, El Hassan AM. Oronasal leishmaniasis caused by a parasite with an unusual isoenzyme profile. Am J Trop Med Hyg. 1997; 56(1):96-8.
    155. Andresen K, Gasim S, El Hassan AM, Khalil EA, Barker DC, Theander TG, Kharazmi A. Diagnosis of visceral leishmaniasis by the polymerase chain reaction using blood, bone marrow and lymph node samples from patients from the Sudan. Trop Med Int Health. 1997;2(5):440-4.
    156. Osman OF, Oskam L, Kroon NC, Schoone GJ, Khalil ET, El Hassan AM, Zijlstra EE, Kager PA. Use of PCR for diagnosis of post-kala-azar dermal leishmaniasis. J Clin Microbiol. 1998; 36(6):1621-4.
    157. Zijlstra EE, Osman OF, Hofland HW, Oskam L, Ghalib HW, El Hassan AM, Kager PA, Meredith SE. The direct agglutination test for diagnosis of visceral leishmaniasis under field conditions in Sudan: comparison of aqueous and freeze-dried antigens. Trans R Soc Trop Med Hyg. 1997; 91(6):671-3.
    158. Ismail A, Kharazmi A, Permin H, El Hassan AM. Detection and characterization of Leishmania in tissues of patients with post kala-azar dermal leishmaniasis using a specific monoclonal antibody. Trans R Soc Trop Med Hyg. 1997; 91(3):283-5.
    159. Fahal AH, el Hag IA, Gadir AF, el Lider AR, El Hassan AM, Baraka OZ, Mahgoub ES. Blood supply and vasculature of mycetoma. J Med Vet Mycol. 1997; 35(2):101-6.
    160. Osman OF, Oskam L, Zijlstra EE, El Hassan AM, El-Naiem DA. & Kager PA. PCR for the prognosis of success of visceral leishmaniasis treatment. Trans R Soc Trop Med HygTrans R Soc Trop Med Hyg 1998; 92:397-400.
    161. Gasim S, El Hassan AM, Khalil EAG, Ismail A, Kadaru AMY, Kharazmi A & Theander, TG. High levels of plasma IL-10 and expression of IL-10 by keratinocytes during visceral leishmaniasis predict subsequent development of post -kala-azar dermal leishmaniasis. Clin Exp Immunol. 1998; 111: 64-69.
    162. Fahal AH, El Hassan AM, Abdelalla AO, Sheik HE. Cystic mycetoma: an unusual clinical presentation of Madurella mycetomatis infection. Trans R Soc Trop Med Hyg. 1998; 92(1):66-7.
    163. Yagi HI, Fahal AH, Gadir AF, El Hassan AM. Mycetoma of the mastoid bone. Trans R Soc Trop Med Hyg. 1998; 92(1):68.
    164. El Hassan AM, Khalil EA, El Sheikh EA, Zijlstra EE, Osman A, Ibrahim ME. Post kala-azar ocular leishmaniasis. Trans R Soc Trop Med Hyg. 1998; 92(2):177-9.
    165. Khalil EA, El Hassan AM, Zijlstra EE, Hashim FA, Ibrahim ME, Ghalib HW, Ali MS. Treatment of visceral leishmaniasis with sodium stibogluconate in Sudan: management of those who do not respond. Ann Trop Med Parasitol. 1998; 92(2):151-8.
    166. Saeed AM, Khalil EA, Elhassan AM, Hashim FA, El Hassan AM, Fandrey J, Jelkmann W. Serum erythropoietin concentration in anaemia of visceral leishmaniasis (kala-azar) before and during antimonial therapy. Br J Haematol. 1998; 100(4):720-4.
    167. Staalsø T, Khalil EA, Elhassan IM, Zijlstra EE, El Hassan AM, Giha HA, Theander TG, Jakobsen PH. Antibody reactivity to conserved linear epitopes of Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1). Immunol Lett. 1998; 60(2-3):121-6.
    168. Zijlstra EE, Daifalla NS, Kager PA, Khalil EAG, El Hassan AM, Reed SG & Ghalib HW. rK39 enzyme-linked immunosorbent assay for the diagnosis of L.donovani infection. Clin Diagn Lab Immunol1998; 5:717-720.
    169. Oskam L, Pratlong F, Zijlstra EE, Kroon CC, Dedet IP, Kager PA, Schönian G, Ghalib HW, El Hassan AM, Meredith SE. Biochemical and molecular characterization of Leishmania parasites isolated from an endemic focus in eastern Sudan. Trans R Soc Trop Med Hyg. 1998; 92(1):120-2.
    170. El Hassan AM. Humoral and cellular immune responses to synthetic peptides of the Leishmania donovani kinetoplastid membrane protein‐ Scand J Immunol. 1998;48(1):103-9.
    171. Fahal AH, El Hassan AM, Abdelalla AO, Sheik HE. Cystic mycetoma: an unusual clinical presentation of Madurella mycetomatis infection. Trans R Soc Trop Med Hyg. 1998; 92(1):66-7.
    172. Khalil EAG, Elhassan L, Ismail A, Zijlstra EE, El Hassan AM. Leprosy in an endemic focus in the Sudan. East African Med. J. 1999;76(11): 35-38.
    173. Kharazmi A, Kemp K, Ismail A, Gasim S, Gaafar A, Kurtzhals JA, El Hassan AM, Theander TG, Kemp M. T-cell response in human leishmaniasis. Immunol Lett. 1999;65(1-2):105-8.
    174. Gaafar A, Veress B, Permin H, Kharazmi A, Theander TG, El Hassan AM. Characterization of the local and systemic immune responses in patients with cutaneous leishmaniasis due to Leishmania major. Clin Immunol. 1999; 91(3):314-20.
    175. Jensen AT, Gasim S, Moller T, Ismail A, Gaafar A, Kemp M, El Hassan AM, Kharazmi A, Alce TM, Smith DF, Theander TG. Serodiagnosis of Leishmania donovani infections: assessment of enzyme-linked immunosorbent assays using recombinant L. donovani gene B protein (GBP) and a peptide sequence of L. donovani GBP. Trans R Soc Trop Med Hyg. 1999; 93(2):157-60.
    176. Ibrahim ME, Lambson B, Yousif AO, Deifalla NS, Alnaiem DA, Ismail A, Yousif H, Ghalib HW, Khalil EA, Kadaro A, Barker DC, El Hassan AM. Kala-azar in a high transmission focus: an ethnic and geographic dimension. Am J Trop Med Hyg. 1999; 61(6):941-4.
    177. Ahmed AO, Mukhtar MM, Kools-Sijmons M, Fahal AH, de Hoog S, van den Ende BG, Zijlstra EE, Verbrugh H, Abugroun ES, Elhassan AM, van Belkum A. Development of a species-specific PCR-restriction fragment length polymorphism analysis procedure for identification of Madurella mycetomatis. J Clin Microbiol. 1999; 37(10):3175-8.
    178. Ismail A, El Hassan AM, Kemp K, Gasim S, Kadaru AE, Moller T, Kharazmi A, Theander TG. Immunopathology of post kala-azar dermal leishmaniasis (PKDL): T-cell phenotypes and cytokine profile. J Pathol. 1999;189(4):615-22.
    179. Khalil EA, Elsiddig KE, Elsafi ME, el-Hag IA, Elkhidir IM, Suleiman G, Hussein AM, Ibrahim ME, El Hassan AM. Supra-sternal notch tuberculous abscess: a report of three cases. Trans R Soc Trop Med Hyg. 2000; 94(1):58-60.
    180. Gasim S, El Hassan AM, Kharazmi A, Khalil EA, Ismail A, Theander TG. The development of post-kala-azar dermal leishmaniasis (PKDL) is associated with acquisition of Leishmania reactivity by peripheral blood mononuclear cells (PBMC). Clin Exp Immunol. 2000; 119(3):523-9.
    181. el Mubarak HS, Van De Bildt MW, Mustafa OA, Vos HW, Mukhtar MM, Groen J, El Hassan AM, Niesters HG, Ibrahim SA, Zijlstra EE, Wild TF, Osterhaus AD, De Swart RL. Serological and virological characterization of clinically diagnosed cases of measles in suburban Khartoum. J Clin Microbiol. 2000; 38(3):987-91.
    182. Zijlstra EE, Khalil EA, Kager PA, El Hassan AM. Post-kala-azar dermal leishmaniasis in the Sudan: clinical presentation and differential diagnosis. Br J Dermatol. 2000; 143(1):136-43.
    183. Khalil EA, El Hassan AM, Zijlstra EE, Mukhtar MM, Ghalib HW, Musa B, Ibrahim ME, Kamil AA, Elsheikh M, Babiker A, Modabber F. Autoclaved Leishmania major vaccine for prevention of visceral leishmaniasis: a randomised, double-blind, BCG-controlled trial in Sudan. Lancet. 2000; 356(9241):1565-9.
    184. El Hassan AM, Zijlstra EE. Leishmaniasis in Sudan. 1. Cutaneous leishmaniasis. Trans R Soc Trop Med Hyg. 2001; 95(Supplement_1):S1-7.
    185. El Hassan AM, Zijlstra EE. Leishmaniasis in Sudan. 2. Mucosal leishmaniasis. Trans R Soc Trop Med Hyg. 2001; 95(Supplement_1):S19-26.
    186. Zijlstra EE, El Hassan AM. Leishmaniasis in Sudan. 3. Visceral leishmaniasis. Trans R Soc Trop Med Hyg. 2001; 95(Supplement_1):S27-58.
    187. Zijlstra EE, El Hassan AM. Leishmaniasis in Sudan. 4. Post kala-azar dermal leishmaniasis. R. Soc. Trop. Med. Hyg. 2001; 95(supplement 1):S59-S76.
    188. Zijlstra EE, Nur Y, Desjeux P, Khalil EA, El Hassan AM, Groen J. Diagnosing visceral leishmaniasis with the recombinant K39 strip test: experience from the Sudan. Trop Med Int Health. 2001; 6(2):108-13.
    189. de Swart RL, El Mubarak HS, Vos HW, Mustafa OM, Abdallah A, Groen J, Mukhtar MM, Zijlstra EE, El Hassan AM, Wild TF, Ibrahim SA, Osterhaus AD. Prevention of measles in Sudan: a prospective study on vaccination, diagnosis and epidemiology. Vaccine. 2001; 19(17-19):2254-7.
    190. Satti IN, Osman HY, Daifalla NS, Younis SA, Khalil EA, Zijlstra EE, El Hassan AM, Ghalib HW. Immunogenicity and safety of autoclaved Leishmania major plus BCG vaccine in healthy Sudanese volunteers. Vaccine. 2001; 19(15-16):2100-6.
    191. El Hassan AM, Fahal AH, Ahmed AO, Ismail A, Veress B. The immunopathology of actinomycetoma lesions caused by Streptomyces somaliensis. Trans R Soc Trop Med Hyg. 2001; 95(1):89-92.
    192. El Hassan AM, Khalil EA. Post-kala-azar dermal leishmaniasis: does it play a role in the transmission of Leishmania donovani in the Sudan?.Trop Med Int Health. 2001; 6(9):743-4.
    193. Kordofani YM, Nour YT, El Hassan AM, Shalayel MH. Post kala azar dermal leishmaniasis in Sudan. EMHJ-Eastern Mediterranean Health Journal. 2001; 7 (6), 1061-1064.
    194. Eidsmo L, Wolday D, Berhe N, Sabri F, Satti I, El Hassan AM, Sundar S, Chiodi F, Akuffo H. Alteration of Fas and Fas ligand expression during human visceral leishmaniasis. Clin Exp Immunol. 2002; 130(2):307-13.
    195. El Mubarak HS, van de Bildt MWG, Mustafa OA, Vos HW, Mukhtar MM, Ibrahim SA, Andeweg AC, El Hassan AM, Osterhaus ADME, de Swart RL. Genetic characterization of wild-type measles viruses circulating in suburban Khartoum, 1997-2000. J Gen Virol. 2002; 83(Pt 6):1437-1443.
    196. Jensen AT, Ismail A, Gaafar A, El Hassan AM, Theander TG. Humoral and cellular immune responses to glucose regulated protein 78 -- a novel Leishmania donovani antigen. Trop Med Int Health. 2002; 7(5):471-6.
    197. Ibrahim SA, Mustafa OM, Mukhtar MM, Saleh EA, El Mubarak HS, Abdallah A, El Hassan AM, Osterhaus AD, Groen J, De Swart RL, Zijlstra EE. Measles in suburban Khartoum: an epidemiological and clinical study. Trop Med Int Health. 2002; 7(5):442-9.
    198. el Hassan LA, Khalil EA, El Hassan AM. Socio-cultural aspects of leprosy among the Masalit and Hawsa tribes in the Sudan. Lepr Rev. 2002; 73(1):20-8.
    199. Khalil EA, Zijlstra EE, Kager PA, El Hassan AM. Epidemiology and clinical manifestations of Leishmania donovani infection in two villages in an endemic area in eastern Sudan. Trop Med Int Health. 2002; 7(1):35-44.
    200. Musa AM, Khalil EA, Raheem MA, Zijlstra EE, Ibrahim ME, Elhassan IM, Mukhtar MM, El Hassan AM. The natural history of Sudanese post-kala-azar dermal leishmaniasis: clinical, immunological and prognostic features. Ann Trop Med Parasitol. 2002; 96(8):765-72.
    201. Masri MA, Abdel Seed NM, Fahal AH, Romano M, Baralle F, El Hassam AM, Ibrahim ME. Minor role for BRCA2 (exon11) and p53 (exon 5-9) among Sudanese breast cancer patients. Breast Cancer Res Treat. 2002; 71(2):145-7.
    202. Ibrahim SA, Abdalla HA, El Hassan AM. Case report: congenital salivary gland analage tumor presenting with neonatal respiratory distress. Pediatr Pathol Mol Med. 2003; 22(3):209-11.
    203. Bereir RE, Mohamed HS, Seielstad M, El Hassan AM, Khalil EA, Peacock CS, Blackwell JM, Ibrahim ME. Allele frequency and genotype distribution of polymorphisms within disease-related genes is influenced by ethnic population sub-structuring in Sudan. Genetica. 2003; 119(1):57-63.
    204. Elsiddig KE, Khalil EA, Elhag IA, Elsafi ME, Suleiman GM, Elkhidir IM, Hussein AM, El Hassan AM. Granulomatous mammary disease: ten years' experience with fine needle aspiration cytology. Int J Tuberc Lung Dis. 2003 ;7(4):365-9.
    205. Kamil AA, Khalil EA, Musa AM, Modabber F, Mukhtar MM, Ibrahim ME, Zijlstra EE, Sacks D, Smith PG, Zicker F, El Hassan AM. Alum-precipitated autoclaved Leishmania major plus bacille Calmette-Guérrin, a candidate vaccine for visceral leishmaniasis: safety, skin-delayed type hypersensitivity response and dose finding in healthy volunteers. Trans R Soc Trop Med Hyg. 2003; 97(3):365-8.
    206. Zijlstra EE, Musa AM, Khalil EA, el-Hassan IM, El Hassan AM. Post-kala-azar dermal leishmaniasis. Lancet Infect Dis. 2003; 3(2):87-98.
    207. Mohamed HS, Ibrahim ME, Miller EN, Peacock CS, Khalil EA, Cordell HJ, Howson JM, El Hassan AM, Bereir RE, Blackwell JM. Genetic susceptibility to visceral leishmaniasis in The Sudan: linkage and association with IL4 and IFNGR1. Genes Immun. 2003; 4(5):351-5.
    208. Mohamed HS, Ibrahim ME, Miller EN, White JK, Cordell HJ, Howson JM, Peacock CS, Khalil EA, El Hassan AM, Blackwell JM. SLC11A1 (formally NRAMP) and susceptibility to visceral leishmaniasis in the Sudan. Eur J Hum Genet. 2004;12:66-74.
    209. Aljafari AS, Khalil EA, ELsiddig KE, EL Hag IA, Ibrahim ME, ELsafi ME, Hussein AM, EL Khidir IM, Sulaiman GS, El Hassan AM. Diagnosis of tuberculous lymphadenitis by FNAC. 2004; 15:44-8.
    210. Mahdi M, Elamin EM, Melville SE, Musa AM, Blackwell JM, Mukhtar MM, El Hassan AM, Ibrahim ME. Sudanese mucosal leishmaniasis: isolation of a parasite within the Leishmania donovani complex that differs genotypically from L. donovani causing classical visceral leishmaniasis. Infect Genet Evol. 2005; 5(1):29-33.
    211. Own AI, EL Hassan LA, Elamin EM, El Hassan AM. Blue nevus developing in a keratin cyst: a case report. Sudan J Dermatol. 2005;3(3):125-127.
    212. El Hassan AM, Ahmed MA, Elamin EM and EL Hassan LA. Cutaneous leishmaniasis in Sudan:an update. Sudan J Dermatol. 2005;3(2):55-s61
    213. El Hassan AM, Abdullah NE, Kadaru AMY, El Hassan LAM. An unusual case of mucosal leishmaniasis with cutaneous dissemination in Sudan and its epidemiological significance. Sudan J Dermatol 2005;3(2):88-91.
    214. Own AI, Salam IM, Mahmoud MA, Elamin EM, El Hassan AM. Lipoblastoma in sa four-year-old african child. Fetal Pediatr Pathol. 2005; 24(3):133-9.
    215. Elamin EM, Guerbouj S, Musa AM, Guizani I, Khalil EA, Mukhtar MM, Elkadaro AM, Mohamed HS, Ibrahim ME, Abdel Hamid MM, El Azhari M, El Hassan AM. Uncommon clinical presentations of cutaneous leishmaniasis in Sudan. Trans R Soc Trop Med Hyg. 2005; 99(11):803-8.
    216. Mahdi M, Elamin EM, Melville SE, Musa AM, Blackwell JM, Mukhtar MM, El Hassan AM, Ibrahim ME. Sudanese mucosal leishmaniasis: isolation of a parasite within the Leishmania donovani complex that differs genotypically from L. donovani causing classical visceral leishmaniasis. Infect Genet Evol. 2005;5(1):29-33.
    217. Musa AM, Khalil EAG, Ismail A, EL Hassan IM, Fasharki H, Khameesipore A, Modabber F, Zijlstra EE, El Hassan AM. Safety immunogenecity, and possible efficacy of immunochemotherapy of persistent post kala-azar dermal leishmaniasis. Sudan J Dermatol. 2005; 3:63-72.
    218. Musa AM, Khalil EA, Mahgoub FA, Hamad S, Elkadaru AM, El Hassan AM. Efficacy of liposomal amphotericin B (AmBisome) in the treatment of persistent post-kala-azar dermal leishmaniasis (PKDL). Ann Trop Med Parasitol. 2005; 99(6):563-9.
    219. Khalil EA, Ayed NB, Musa AM, Ibrahim ME, Mukhtar MM, Zijlstra EE, Elhassan IM, Smith PG, Kieny PM, Ghalib HW, Zicker F, Modabber F, El Hassan AM. Dichotomy of protective cellular immune responses to human visceral leishmaniasis. Clin Exp Immunol. 2005; 140(2):349-53.
    220. El Hassan AM, Ahmed MA, Elamin EM, EL Hassan Lamyaa A M. Cutaneous leishmaniasis in Sudan: an update. Sudan J Dermatol. 2005; 3:53-62.
    221. Elamin EM, Mukhtar MM, Bakhiet Sahar, Musa AM, EL Hassan Lamyaa AM, Kadaru AMY, El Hassan AM. Case report: An unusual case of mucosal leishmaniasis with cutaneous dissemination in Sudan and its epidemiological significance. Sudan J Dermatol. 2005; 3:88-91.
    222. Ismail A, Khalil EA, Musa AM, El Hassan IM, Ibrahim ME, Theander TG, El Hassan AM. The pathogenesis of post kala-azar dermal leishmaniasis from the field to the molecule: does ultraviolet light (UVB) radiation play a role? Med Hypotheses. 2006; 66(5):993-9.
    223. Khalil EA, Musa AM, Modabber F, El Hassan AM. Safety and immunogenicity of a candidate vaccine for visceral leishmaniasis (Alum-precipitated autoclaved Leishmania major + BCG) in children: an extended phase II study. Ann Trop Paediatr. 2006; 26(4):357-61.
    224. Mudawi HM, Elhassan EA, Baraka OZ, El Hassan AM. Schistosomal colitis without granuloma formation in a kidney transplant recipient. Nat Clin Pract Gastroenterol Hepatol. 2006; 3(12):700-4.
    225. El Hassan AM, Fahal AH, Veress B. Cell phenotypes, immunoglobulins and complement in lesions in lesions caused by Madurella mycetomatis. Sudanese journal of Dermatology.  2006; 4:2-5.
    226. Mahdi SI, El Hassan AM, Ahmed ME. Crohn's disease masquerading carcinoma of the esophagus. Saudi Med J. 2007; 28(8):1287-8.
    227. Sharafeldin GS, Khalil EA, El Hag IA, Elsiddig KE, Elsafi ME, Aijafari AS, Elnour AA, Hussein AM, Elkhidir IM, El Hassan AM. Haematogenous dissemination of tuberculous lymphadenitis. East Afr Med J. 2007; 84(1):3-7.
    228. Salih MA, Ibrahim ME, Blackwell JM, Miller EN, Khalil EA, El Hassan AM, Musa AM, Mohamed HS. IFNG and IFNGR1 gene polymorphisms and susceptibility to post-kala-azar dermal leishmaniasis in Sudan. Genes Immun. 2007; 8(1):75-8.
    229. Miller EN, Fadl M, Mohamed HS, Elzein A, Jamieson SE, Cordell HJ, Peacock CS, Fakiola M, Raju M, Khalil EA, El Hassan AM, Musa AM, Ibrahim ME, Blackwell JM. Y chromosome lineage- and village-specific genes on chromosomes 1p22 and 6q27 control visceral leishmaniasis in Sudan. PLoS Genet. 2007; 3(5):e71.
    230. Kaballo BG, Khogali MS, Khalifa EH, Khaiii EA, El Hassan AM, Abu-Aisha H. Patterns of "severe acute renal failure" in a referral center in Sudan: excluding intensive care and major surgery patients. Saudi J Kidney Dis Transpl. 2007; 18(2):220-5.
    231. Yousif NM, Musa AM, El Hassan AM, Khalil EAG, Elhassan LAM. Anti-Glucose-Regulated Protein (GRP78) antibody response in Alum/ALM plus BCG vaccine visceral and post Kala-Azar Sudan Medical Journal of Medical Sciences. 2007; 2:175-178.
    232. Yousif NM, Musa AM, El Hassan AM, Khalil EAG, El Hassan IM. Anti - glucose regulated protein 78 [GRP78] antibody responses in Alum/ALM plus BCG vaccine, visceral leishmaniasis, and Post Kala- azar Dermal leishmaniasis patients. Sudan J Med Sci. 2007; 2(3): 175-178.
    233. Elagib AH, Ahmed AE, Hussein A, Musa AM, Khalil EA, El Hassan AM. Possible predisposing factors for thrombotic cerebrovascular accidents in Sudanese patients. Saudi Med J. 2008 Feb; 29(2):304-6.
    234. Allam MM, Alkadarou TA, Ahmed BG, Elkhair IS, Alansary EH, Ibrahim ME, El Hassan AM, Elhassan IM, Allam MM, Alkadarou TA, Ahmed BG, Elkhair IS, Alansary EH, Ibrahim ME, Elhassan AM, Elhassan IM. Hyper-reactive Malarial Splenomegaly (HMS) in malaria endemic area in Eastern Sudan. Acta Trop. 2008; 105(2): 196-9.
    235. Musa AM, Khalil EA, Mahgoub FA, Elgawi SH, Modabber F, Elkadaru AE, Aboud MH, Noazin S, Ghalib HW, El Hassan AM; Leishmaniasis Research Group/Sudan. Immunochemotherapy of persistent post-kala-azar dermal leishmaniasis: a novel approach to treatment. Trans R Soc Trop Med Hyg. 2008; 102(1): 58-63.
    236. Khalil EA, Musa AM, Elgawi SH, Meshasha A, Gamar Eldawla I, Elhassan MO, Eljaleel KA, Younis BM, Elfaki ME, El Hassan AM. Revival of a focus of visceral leishmaniasis in central Sudan. Ann Trop Med Parasitol. 2008; 102(1): 79-80.
    237. Nimir AA, Khalil EA, Musa AM, Yassin HM, El Hassan AM. Evaluation of the particle gel diffusion technique for the detection of haemoglobin S in Sudanese patients. Ann Clin Biochem. 2009 Mar; 46(Pt 2): 114-6.
    238. Elamin EM, Guizani I, Guerbouj S, Gramiccia M, El Hassan AM, Di Muccio T, Taha MA, Mukhtar MM. Identification of Leishmania donovani as a cause of cutaneous Leishmaniasis in Sudan. Trans Roy Soc Trop Med Hyg. 2008 Jan; 102(1): 54-57.
    239. Musa AM, Khalil EAG, Mahgoub FA, Hassab Elgawi SH, Modabber F, Elkadaru AMY, Aboud MH, Noazin S, Ghalib HW, El Hassan AM. Immunochemotherapy of persistent post kala-azar dermal leishmaniasis: a novel approach of treatment. Trans R Soc Trop Med Hyg. 2008 Jan; 102(1): 58-63.
    240. Elagib AH, Ahmed AE, Hussein A, Musa AM, Khalil EA, El Hassan AM. Possible predisposing factors for thrombotic cerebrovascular accidents in Sudanese patients. Saudi Med J. 2008 Feb; 29(2): 304-6.
    241. Khalil EAG, Musa AM, Elgawi SH, Meshasha A, I Gamar Eldawla, MO Elhassan MO, Eljaleel KA, Younis BM, Elfaki MEE, El Hassan AM. Revival of a leishmaniasis focus in White Nile state, Sudan. Ann Trop Med Parasitol. 2008; 102(1): 79-80.
    242. El Hassan AM, El Hassan L, Mudawi H, Gasim B, Own A, Elamin E, Ibn Ouf M, El Mekki Abdullah M, Fedail S. Malignant gastric tumors in Sudan: a report from a single pathology center. Hematol Oncol Stem Cell Ther. 2008; 1(2): 130-132.
    243. Ismail WMA, Khalil EAG, Bygbjerg Ib C; Osman FM; Musa AM, El Hassan AM. Coverage and efficacy of BCG vaccination in displaced populations: a measure of effectiveness of an Expanded Program of Immunization. Khartoum Med J. 2008; 1(1): 30-33.
    244. Farouk S, Salih MA, Musa AM, Blackwell JM, Miller EN, Khalil EA, El Hassan AM, Ibrahim ME, Mohamed HS. Interleukin 10 Gene Polymorphisms and Development of Post Kala-Azar Dermal Leishmaniasis in a Selected Sudanese Population. Public Health Genom. 2010; 13(6): 362-7.
    245. Elagraa BS, Ayed SI, Abdullah MA, El Hassan AM. Langerhans Cell Histiocytosis (Letterer-Siwe disease ) - Report of a case. Sud J Dermatol. 2009; 7(1): 33-36.
    246. Bashir AHH, El Hassan AM. Adult disseminated Langerhans histiocytosis with nail involvement in a Sudanese patient: a case report and review. Sud J Dermatol. 2009; 7(1): 37-41.
    247. Hamad SH, Khalil EAG, Musa AM, Ibrahim ME, Younis BM, Elfaki MEE, El Hassan AM. Interleukin-10 gene polymorphisms and development of post Kala-azar dermal leishmaniasis (PKDL) in a selected Sudanese population. Public Health Genom. 2010; 13(6): 362-7.
    248. Hamad SH, Khalil EAG, Musa AM, Ibrahim ME, Younis BM, Elfaki MEE, El Hassan AM. Leishmania donovani: Genetic diversity of isolates from Sudan characterized by PCR-based RAPD. Exp Parasitol. 2010; 125(4): 389-393.
    249. Elnojomi NA, Musa AM, Younis BM, ELfaki MEE, El Hassan AM, Khalil EAG. Surrogate markers for subtle renal injury in patients with visceral leishmaniasis. Saudi J Kidney Dis Transpl. 2010 Sep; 21(5): 872-5.
    250. Fahal AH, Rahman IA, El Hassan AM, Rahman MEAEL, Zijlstra EE. The safety and efficacy of itraconazole for the treatment of patients with eumycetoma due to Madurella mycetomatis. Trans R Soc Trop Med Hyg. 2011; 105(3): 127–32.
    251. Abbas K, Musatafa MA, Abass S, Kheir MM, Mukhtar M, Elamin EM, El Hassan AM. Mucosal leishmanias in a Sudanese patient. Am J Trop Med Hyg.  2009; 80(6): 935-88.
    252. Nimir AA, Khalil EA, Musa AM, Yassin HM, El Hassan AM. Evaluation of the particle gel diffusion technique for the detection of haemoglobin S in Sudanese patients. Ann Clin Biochem. 2009; 46(Pt 2): 114-6.
    253. Bashir AHHand El Hassan AM. Disseminated Adult Cutaneous Langerhans Cell Histiocytosis (LCH) with nail involvement and association with H. pylori infection. Single case report (Case & Review). Sudan J Dermatol. 2009;7: 37-41.
    254. Elnojomi NA, Musa AM, Younis BM, Elfaki ME, El Hassan AM, Khalil EA. Surrogate markers of subtle renal injury in patients with visceral leishmaniasis. Saudi J Kidney Dis Transpl. 2010; 21(5): 872-5.
    255. Hassan MM, El Hassan AM, Musa AM, Osman OF, El Raba'a FMA, Balkew M, Elhassan IM. Establishment and maintenance of a laboratory colony of the sandfly Phlebotomus orientalis (Diptera: Psychodidae), the vector of visceral leishmaniasis in Sudan. Khartoum Med J. 2010; 3(2): 420-424.
    256. Hamad SH, Khalil EA, Musa AM, Ibrahim ME, Younis BM, Elfaki ME, El Hassan AM. Leishmaniasis Research Group, Sudan. Leishmania donovani: genetic diversity of isolates from Sudan characterized by PCR-based RAPD. Exp Parasitol. 2010; 125(4): 389-93.
    257. Hailu A, Musa A, Wasunna M, Balasegaram M, Yifru S, Mengistu G, Hurissa Z, Hailu W, Weldegebreal T, Tesfaye S, Makonnen E, Khalil E, Ahmed O, Fadlalla A, El Hassan AM, Raheem M, Mueller M, Koummuki Y, Rashid J, Mbui J, Mucee G, Njoroge S, Manduku V, Musibi A, Mutuma G, Kirui F, Lodenyo H, Mutea D, Kirigi G, Edwards T, Smith P, Muthami L, Royce C, Ellis S, Alobo M, Omollo R, Kesusu J, Owiti R, Kinuthia J; Leishmaniasis East Africa Platform (LEAP) group. Geographical variation in the response of visceral leishmaniasis to paromomycin in East Africa: a multicentre, open-label, randomized trial. PLoS Negl Trop Dis. 2010; 4(10): e709.
    258. Farouk S, Salih MA, Musa AM, Blackwell JM, Miller EN, Khalil EA, El Hassan AM, Ibrahim ME, Mohamed HS. Interleukin 10 gene polymorphisms and development of post kala-azar dermal leishmaniasis in a selected sudanese population. Public Health Genom. 2010; 13(6): 362-7.
    259. Hamad SH, Khalil EAG, Musa AM, Ibrahim M, Younis BM, Elfaki ME, El Hassan AM. Leishmania donovani: genetic diversity of isolates from Sudan characterized by PCR-based RAPD. Exp Parasitol. 2010; 125(4): 389-93.
    260. Yousif ME, El Hassan AM. Regression of Kaposi's sarcoma in a Sudanese kidney transplant recipient after conversion to sirolimus: a focus on a common clinical problem. Arab J Nephrol Transplant. 2011; 4(1): 49-52.
    261. Yousif ME, El Hassan AM. Castleman's disease in a kidney failure patient diagnosed incidentally during transplantation. Arab J Nephrol Transplant. 2011; 4(1): 49-52.
    262. Fahal AH, Rahman IA, El Hassan AM, Rahman ME, Zijlstra EE. The safety and efficacy of itraconazole for the treatment of patients with eumycetoma due to Madurella mycetomatis. Trans R Soc Trop Med Hyg. 2011; 105(3): 127-32.
    263. Fakiola M, Miller EN, Fadl M, Mohamed HS, Jamieson SE, Francis RW, Cordell HJ, Peacock CS, Raju M, Khalil EA, El Hassan AM, Musa AM, Silveira F, Shaw JJ, Sundar S, Jeronimo SM, Ibrahim ME, Blackwell JM. Genetic and functional evidence implicating DLL1 as the gene that influences susceptibility to Visceral leishmaniasis at chromosome 6q27. J Infect Dis. 2011; 204(3): 467-77.
    264. Abdullah NE, Adam AAM, Khalifa EH, EL Hassan LAM, Ibrahim ME, Hamad KM, El Hassan AM. Nasopharyngeal Cancer in Sudan: Epidemiology, Clinical and Histological Characteristics. Clin Med Insights Ear Nose Throat. 2011; (4): 5-11.
    265. Adam AAM, Abdullah NE, Khalifa EH, El Hassan LAM, Elamin EM, Hamad KM, Ibrahim ME, El Hassan AM. Pathology of Nasopharyngeal Carcinoma in Sudanese Patients and its Association with Epstein-Barr Virus: A Report from a Single Center in Khartoum. Advances in Tumor Virology. 2011; 2: 1-6
    266. El Hassan AM. Desmoid tumor of the back following removal of a spinal meningioma: a case report. Journal of Arab Medical 2011; 1(2): 1-6.
    267. Bashir AHH, EL Tahir MA, El Hassan AM. Dermatitis herpetiformis (DH) in association with H pylori infection: description of a case report. Br J Med Med Res. 2011; 1(3): 163-169.
    268. Bashir AHH, El Hassan LM, El Hassan AM. Langerhans cell histiocytosis (LCH) associated with Helicobacter pylori infection. Clin Rev Opinions. 2011; 3(4): 45-50.
    269. Bashir AHH, E Ttahir MA, El Hassan AM. Dermatitis Herpetiformis (DH) in Association with H. pylori Infection: Description of a Case Report. Br J Med Med Res. 2011; 1(3): 163-169.
    270. Khalil EA, Musa AM, Younis BM, Elfaki ME, Zijlstra EE, El Hassan AM. Blindness following visceral leishmaniasis: a neglected post-kala-azar complication. Trop Doct. 2011; 41(3): 139-40.
    271. Elimairi I, El Hassan AM, Sulliman AM, Teppa J, Baur DA. Sublingual soft tissue mass. J Oral Maxillofac Surg. 2012; 70(1): e23-7.
    272. Hamad SH; Khalil EAG; Musa AM, Ibrahim ME, El Hassan AM. In vitro induction of unresponsiveness to sodium stibogluconate in Leishmania donovani isolates from Sudan. Khartoum Med J. 2010; 3(2): 416-419.
    273. Hassan MM, Elhassan AM, Musa AM, Osman OF, El Raba'a FMA, Balkew M, El Hassan AM. Establishment and maintenance of a laboratory colony of the sandfly Phlebotomus orientalis (Diptera: Psychodidae), the vector of visceral leishmaniasis in Sudan. Khartoum Med J. 2010; 3(2): 420-424.
    274. Musa AM, Younis B, Fadlalla A, Royce C, Balasegaram M, Wasunna M, Hailu A, Edwards T, Omollo R, Mudawi M, Kokwaro G, El Hassan AM, Khalil E. Paromomycin for the Treatment of Visceral Leishmaniasis in Sudan: a Randomized, Open-Label, Dose-Finding Study. PLoS Negl Trop Dis. 2010; 4(10): e855.
    275. Hassabelgawi SH, Musa AM, Khalil EAG, Abebe T, Younis BM, Elthair MEE, El Hassan AM, Hailu A, Bart A. Probable genetic hybrids between Leishmania species in Sudanese isolates. J Microbiol Antimicrob. 2011; 3(6): 142-145.
    276. Bashir HHS, AL Hassan L, El Hassan AM. Langerhans cell histiocytosis (LCH) associated with Helicobacter pylori infection. Clin Rev Opinions.2011; 3: 2141-2553.
    277. Musa A, Khalil E, Hailu A, Olobo J, Balasegaram M, Omollo R, Edwards T, Rashid J, Mbui J, Musa B, Abuzaid AA, Ahmed O, Fadlalla A, El Hassan AM, Mueller M, Mucee G, Njoroge S, Manduku V, Mutuma G, Apadet L, Lodenyo H, Mutea D, Kirigi G, Yifru S, Mengistu G, Hurissa Z, Hailu W, Weldegebreal T, Tafes H, Mekonnen Y, Makonnen E, Ndegwa S, Sagaki P, Kimutai R, Kesusu J, Owiti R, Ellis S, Wasunna M. Sodium stibogluconate (SSG) & paromomycin combination compared to SSG for visceral leishmaniasis in East Africa: a randomised controlled trial. PLoS Negl Trop Dis. 2012;6(6):e1674.
    278. Elfaki ME, Khalil EA, De Groot AS, Musa AM, Gutiérrez Núñez A, Younis BM, Salih KA, El Hassan AM. Immunogenicity and immune modulatory effects of in silico predicted L. donovani candidate peptide vaccines, Hum Vaccin Immunother. 2012; 8(12):1769-1774.
    279. Salim AD, Arbab MA, El Hassan LA , El Hassan AM. Schistosomiasis of the spinal cord: report of 5 cases from Sudan  East Mediterr Health J. 2012; 18: 294-7
    280. Fahal AH, Arbab MAR, El Hassan AM. Aggressive Clinical Presentation of Mycetoma due to Actinomadura Pelletierii. Khartoum Med J. 2012; 5(1): 699-702.
    281. Mohamed SN, Khalil EAG, Musa AM, Musa BY, Omer SA, Sharief AH and El Hassan AM. Anti-Leishmania donovani antibodies enhance promastigotes internalization into host macrophages. J Microbiol and Antimicrob. 2012;4(7):110-4.
    282. Musa AM, Khalil EA, Younis BM, Elfaki ME, Elamin MY, Adam AO, Mohamed HA, Dafalla MM, Abuzaid AA, El Hassan AM. Treatment-based strategy for the management of post-kala-azar dermal leishmaniasis patients in the Sudan. J Trop Med. 2013;2013: 708391.
    283. Khalil EA, Khidir SA, Musa AM, Musa BY, Elfaki ME, Elkadaru AM, Zijlstra E, El Hassan AM. Post-Kala-Azar Dermal Leishmaniasis: A Paradigm of Paradoxical Immune Reconstitution Syndrome in Non-HIV/AIDS Patients. J Trop Med. 2013;2013:275253.
    284. Al Dawi AF, Mustafa MI, Fahal AH, El Hassan AM, Bakhiet SM, Mahgoub ES, Mergani A, Mukhtar MM. The possible association of HLA-DRB1 & HLA-DQB1 and the occurrence of Eumycetoma. Khartoum Med J. 2013; 6(3): 923-29.
    285. Omer TA, EL Hassan LAM, El Hassan AM, Fahal AH A rare presentation of Xanthogranulomatous appendicitis and CaecalAngio-lipoma in one patient. Sudan Med J. 2011; 46(4): 165-8.
    286. Fahal AH, EL Sheik H, El Hassan AM. Venous Varicosity in Mycetoma. Sudan Med J. 2011; 47(1): 20-24.
    287. Fahal AH, Rahman I A, El Hassan AM, EL Rahman ME, Zijlstra EE. The efficacy of itraconazole in the treatment of patients with eumycetoma due to Madurella mycetomatis. Trans R Soc Trop Med Hyg. 2011; 105(3): 127-32.
    288. Alkadarou T, Musa A, Alkadarou A, Mahfouz MS, Troye-Blomberg M, El Hassan AM, Elhassan IM. Immunological Characteristics of Hyperreactive Malarial Splenomegaly Syndrome in Sudanese Patients. J Trop Med. 2013:
    289. Bashir AH, Yousif SM, EL Hassan LAM, Elamin WM, Adam A, Ibrahim ME, Alfarouk KO, Muddathir AK, El Hassan AM. Primary Cutaneous Follicular Lymphoma Associated with Helicobacter pylori Infection. Am J Dermatol Venereol. 2013; 2(3): 27-30.
    290. El Hassan AM, Khalil EA, Elamin WM, El Hassan LA, Ahmed ME, Musa AM. Misdiagnosis and Mistreatment of Post-Kala-Azar Dermal Leishmaniasis. Case Rep Med. 2013; 351-579.
    291. Elhassan AA, Hussein AA, Mohamed HS, Rockett K, Kwiatkowski D, El Hassan AM, Ibrahim ME. The 5q31 region in two African populations as a facet of natural selection by infectious diseases. Genetika. 2013; 49(2): 279-88.
    292. Bashir AHH, Elamin WM, El Hassan LA, Al Farouk K, El Hassan AM. Hidradenitis Suppurativa (HS), in Association with Helicobacter Pylori, in a Female Sudanese Patient: Case Report. Am J Dermatol Venereol. 2014; 3(1): 1-4.
    293. Bashir AHH, Yousif SM, Sati AS, El Hassan LAM, El Hassan AM. Infantile Lymphomatoid Granulomatosis in a Sudanese patient, description of a Case report. Sudan J Dermatol. 2012; 9:27-31.
    294. Bashir AHH, Elhassan LAM, Muddathir AK, Alfarouk KO, El Hassan AM. Eosinophilic Folliculitis (Ofuji's Disease) and Mucosal Involvement, in Association with Helicobacter pylori in Sudanese Patient. Am J Dermatol Venereol. 2013; 2(4): 39-41.
    295. Arbab MAR, Al Deaf SAH, Elhassan LA, Beshir BM, Ahmed MS, Mohamed HA, El Hassan AM. Cranial Meningioma in Sudanese Patients: Clinical and Pathological Characteristics. Int J Res. 2014; 1(7): 452-61.
    296. Gassoum A, Arbab M, Al Deaf S, El Hassan LA, El Hassan AM. P53 Gene allele frequency in Linguistic Affiliation of Different Sudanese tribes. Int J Curr Res. 2014; 1(4): 880-885.
    297. Gassoum A, Arbab M, Al Deaf S, El Hassan LA, El Hassan AM. P53 Immunohistochemistry and Direct Sequencing of Codon 72 Exon 4, in Intracranial Meningioma Among Sudanese Patients. Int J Curr Res. 2014; 6(5); 6647-6650.
    298. Gassoum A, Arbab M, Al Deaf S, El Hassan LA, El Hassan AM. Ki-67 antigen immunohistochemistry in Intracranial Meningioma among Sudanese patients. Int J Curr Res. 2014;6 (5),6643-6646.
    299. Adam AAM, Abdullah NE, El Hassan LAM, Elamin EM, Ibrahim ME, El Hassan AM. Detection of Epstein-Barr Virus in Nasopharyngeal Carcinoma in Sudanese by in Situ J Cancer Ther. 2014; 5(6): 517-522.
    300. Gasoom A, Arbab MA, Al Deaf SAH, Eldaif W, El Hassan LA, El Hassan AM, Fadl-Elmula IM. p53 Gene Codon 72 Polymorphism Genotyping in Meningioma among Sudanese patients. Int J Curr Res. 2014 Apr; 6(4): 6254-6257.
    301. Arbab MAR, Al Deaf SAH, Elhassan LAM, Gassoum A, Dafa Allah A, El Hassan AM. Cystic Cranial  Meningioma; Unusal Imaging features. Int J Res. 2014 Sep; 1(8): 104-114.
    302. Arbab MAR, Al Deaf SAH, Elhassan LAM, El Hassan AM. Sellar region Keratinizing and Calcifying Odontogenic Cyst: Case Report. Intl J Res. 2014 Sep; 1(8): 97-103.
    303. Bashir AHH, Elhassan GO, Muddathir A, Mithani‎ A, Diab TE, Imeer ATA, Sidahmed AB, Babikir ZAA, Alfarouk KO, Elhassan LAM, El Hassan AM. Generalized Hyperpigmentation, in Sudanese Patient with Primary Addison’s Disease as Autoimmune Manifestation of Extra Digestive Helicobacter pylori Infection. Am J Dermatol Venereol. 2014;3(5): 84-86.
    304. Arbab MAR, Al Deaf SAH, Elhassan LAM, Bashir BM, Gassoum AFB, El Hassan AM. Pathological Pattern of Atypical Meningioma: Diagnostic Criteria and Tumor Recurrence Predictors. Int J Res. 2014; 1(7): 843-850.
    305. Gassoum A, Arbab M, Al Deaf S, El Hassan LA, El Hassan AM. Allele frequency of P53 gene Arg 72 Pro in Sudanese Meningioma patients and Controls. Int J Sci Technol Res. 2014; 3(6): 243-248.
    306. Ahmed ME, Mahgoub MA, Alnedar MG, Mahadi SI, Alzubeir M, El Hassan LAM,  Elamin EM,  El Hassan AM. Myasthenic Crisis Manifesting as Postoperative Respiratory Failure following Resection of Unsuspected IntrathoracicThymic T-cell Lymphoma during Thyroidectomy for an Adjacent Large Retrosternal goiter. Eur Thyroid J. 2014; 3:206-210.
    307. Bashir AHH, Yousif SM, Mitani A, Muddathir A , Elhassan GO, Ramadan AMAI, El Amin HA, Alfarouk KO, Elhassan LA, El Hassan AM. Papillom-Lefevre Syndrome: A Report of Three Siblings. Am J Dermatol Venereol. 2014: 3(1): 5-8.
    308. Bashir AHH, Mitani A, Elhassan GO, El Hassan LAM, Muddathir A, Alfarouk KO, El Hassan AM. Herpes Simplex Dermatitis (Keratitis): Two Case Reports. Am J Dermatol Venereol. 2014; 3(4): 72-74.
    309. Hassan LA,Gassoum A, Arbab M, Al Deaf S, El Hassan AM. Metastatic Meningioma in Sudanese patients: Clinical cases. Int J Curr Res. 2014; 6(5): 6875-6878.
    310. Mohamed HE, Hammad II, Elamin S, Elamin EM, Ibrahim AI, El-Magzoub AR, Farragallah IA, Elhasan LA, El Hassan AM. Re-examination of renal allograft biopsy blocks for C4d positivity: missed cases of antibody mediated rejection. Arab J Nephrol Transplant. 2014; 7(2):113-7..
    311. Idris AB, Abdulgayoom A, Mudawi E, El Hassan AM, Elamin EM, El Hassan LA. Coexistence of sickle cell nephropathy and lupus nephritis in a Sudanese child: a case report and review of the literature. Saudi J Kidney Dis Transpl. 2015; 26(3): 584-8.
    312. Bashir AHH, El Hassan LAM, Muddathir A, Alfarouk KO, Mohammed RO, Elhassan GO, Mithani A, El Hassan AM. Hemangiopericytoma (HPC) in Adolescent Sudanese patient. Am J Dermatol Venereol. 2015; 4(1): 5-8.
    313. Bashir AHH, El Hassan LAM, Mudathir A, Mithani A, Sidahmed AB, Elhassan GO, Mohammed RA, Alfarouk KO, El Hassan AM. Case report: Morphea Profunda associated with Helicobacter pylori Infection in Sudanese Patient. Am J Dermatol Venereol. 2015; 4(2): 13-14.
    314. El Hassan AM, El amin WM, El Hassan LAM, Elkareem GDA, Musa AM, Abd Alla EA, Ibrahim ME, Khalil EAG. Oesophageal cancer: Pathological subtypes and markers of metastasis. J Histol Histopathol. 2015; 2: 2-11
    315. El Hassan AM, El Hassan LAM, ElAmin EM, Al Deaf SAH, Musa AM, Ibrahim ME, Arbab MA, Khalil EAG. Bartonella infection: An Emerging Neglected Zoonotic Disease in Sudan. J Bacteriol Parasitol. 2015; 6(4): 236-241.
    316. ElMahi OM, Elamin EEM, El Hassan LAM, El Hassan AM, Waggiallah HA. Association Between Her-2/Neu IHC and p53, Estrogen, Progesterone Receptors (ER, PR) and Ki-67 Biomarkers. European J Pharm Med Res. 2016; 3(3): 60-67.
    317. Elimairi I, Sami A, Elamin EM, Elhassan LAM, El Hassan AM. The use of audit in the diagnosis of Oral Leishmaniasis. Khartoum Med J. 2016; 9(1): 1217-1223.
    318. El Hassan LAM, Elamin WM, Adam A, Al Farouk KO, Bashir AHH, El Hassan AM. The Changing Pattern of Kaposi’s Sarcoma in Sudan: Experience in a Single Center. Am J Dermatol Venereol. 2016; 5(2): 34-37.
    319. Fadl-ElMula I, Giha R, Deaf SAH, El Hassan LA, El Hassan AM, Arbab MAR. Rare Suprasellar chordoid meningioma with INI1 gene mutation. Sudan J Med Sci. 2017; 12(3): 198-206.

    BOOKS:

    • El Hassan AM. & Modabber F. Pathology of visceral leishmaniasis in man and experimental animals in: visceral leishmaniasis. H.G. Gilles (editor) 1999.
    • El Hassan AM. The impact of endemic diseases on health and development, Khartoum University Press, 1995.
    • El Hassan AM, Ibrahim ME. Cultural health assessment. Pp 724-731 Mosby, St. Louis, USA, C E Erickson and E M Cessler (editors) 2003.

     

     We were deeply saddened by the death of Prof. Ahmed M. El-Hassan, Emeritus Professor of Pathology at the Institute of Endemic Diseases, University of Khartoum. Prof. El-Hassan passed away on 10 November 2022 in Sudan.

    Read More

    some recent examples

    • Music and Medicine: the Melodies and maladies of the great composers.
    • Problems facing science and technology in the Arab World with particular reference to Sudan
    • Research in the University of Khartoum
    • Ethics of research involving human subjects (given in workshops for various health professionals)
    • Happiness
    • Music and poetry during the Abbasid period given as public lectures and published in Sudanese daily press. This included several articles
    • Reading Harry Potter in the context of Jungian psychology
    • Several articles aimed at informing the public on health issues in TV, radio and daily newspapers. Examples are: leishmaniasis, mycetoma, breast cancer, cervical cancer, Sudanese national Academy of Sciences, Asbestosis, and Silicosis of the lung and Ali Bakatheer on the occasion of celebrating his 100th birthday.

    1955-1957              House officer, Ministry of Health, Sudan

    1957-1958               Medical Officer, Ministry of Health, Sudan

    1958-1960               Research Assistant, Pathology Department, Faculty of Medicine,

                                  University of Khartoum

    1960-1961               Honorary Registrar, Pathology Department, Postgraduate Medical

    School, London

    1961-1962               DCP Training Course, London

    1962-1963               Lecturer in Pathology, Faculty of Medicine, University of Khartoum

    1963-1965              PhD Student, Pathology Department, University of Edinburgh

    1965-1966               Senior Lecturer and Head, Department of Pathology, University of

                                  Khartoum

    1966-1969               Professor of Pathology, University of Khartoum

    1969-1971               Dean, Faculty of Medicine and Deputy Vice-Chancellor, University of Khartoum

    1971-1972               Founding Minister of Higher Education and Research, Sudan

    1972-1977               Chairman Medical Research Council, National Council for Research,

                                  Sudan

    1977-1979               Chairman & Professor, Pathology Department. College of Medicine

                                  and Medical Sciences, King Faisal University, Dammam, Saudi

                                  Arabia

    1979-1980              Professor of Pathology, Faculty of Medicine, Chairman, Medical

    Research Council, Khartoum, Director of Tropical Diseases,

    Institute, Khartoum

    1980-1987               Professor of Pathology, College of Medicine and  Medical Sciences,

    and Director of Research, Translations and Publications, College of Medicine and Medical Sciences, King Faisal  University, Dammam, Saudi Arabia

                  

    1988-1993               Professor of Pathology, Faculty of Medicine, University of Khartoum

                   

    1993-2000              Founding Director, Institute of Endemic Diseases, University of

                                  Khartoum.

    Professor of Pathology, Ahfad School of Medicine, Ahfad University

    for Women, Omdurman, Sudan.

                                   Emeritus Professor of Pathology, University of Khartoum.

    • Supervised or co-supervised numerous MSc, PhD, and MD theses at the Universities of Khartoum, Ahfad, Amsterdam and Copenhagen.
    • Institute of Medical Laboratory Technology, Ministry of Health, Sudan, in 1965. It is now elevated to the Faculty of Medical Laboratory Technology, University of Khartoum.
    • Ministry of Higher Education and Scientific Research, Sudan, 1970.
    • Institute of Tropical Medicine, National Council for Research, Sudan.
    • Department of Pathology, Faculty of Medicine and Medical Sciences, King Faisal University, Dammam, Saudi Arabia.
    • Directorate of Research, Publications and Translations, Faculty of Medicine and Medical Sciences, King Faisal University, Dammam, Saudi Arabia.
    • College of Medical Laboratory Technology, Ahlia University, Omdurman, Sudan.
    • Department of Pathology, School of Medicine, Ahfad University for Women, Omdurman, Sudan.
    • Institute of Endemic Diseases, University of Khartoum.

    • Royal Postgraduate Medical School, University of London, 1971
    • Medical Parasitology Department Faculty of Medicine, University of Copenhagen 2000
    • Faculty of Medical Sciences, October 6 University, Cairo 2002, 2003

    Prof. EL Hassan was an
    Emeritus Professor of Pathology
    University of Khartoum

     

     

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