Ibrahim, R. I., M. . Elzimaity, N. N. Moustafa, M. H. Attia, W. A. Elsalakawy, and R. Z. Abass. “Ecto-5′nucleotidase (CD73) May Predict Occurrence and Grade of GVHD in Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation”. Open Access Macedonian Journal of Medical Sciences, vol. 9, no. B, Feb. 2021, pp. 154-60, doi:10.3889/oamjms.2021.5707.