Yousif, Ashraf, and Atif Elagib. “HAPTOGLOBIN PHENOTYPES AND SUSCEPTIBILITY OF SCHISTOSOMA PARASITES INFECTION IN CENTRAL SUDAN”. Mediterranean Journal of Hematology and Infectious Diseases 9, no. 1 (July 1, 2017): e2017042. Accessed July 16, 2019. https://www.mjhid.org/index.php/mjhid/article/view/2017.042.