Ragab, S., M. Safan, and E. A. Badr. “STUDY OF SERUM HAPTOGLOBIN LEVEL AND ITS RELATION TO ERYTHROPOIETIC ACTIVITY IN BETA THALASSEMIA CHILDREN .”. Mediterranean Journal of Hematology and Infectious Diseases, Vol. 7, no. 1, Feb. 2015, p. e2015019, doi:10.4084/mjhid.2015.019.