moustafa, amal z., Mohammed S. Aldosari, Talat A. AL-Bukhari, Younis A. Allohibi, Shirin H . Teama, Ghada A. Wassif, Iman S. Osheba, and Nada bajuaifer. 2021. “The Frequency of ABO and Rhesus Blood Groups in Saudi Healthy Blood Donors Versus Non-Saudi in a Retrospective Study in Makkah City: ABO and Rhesus Blood Groups in Makkah City”. Saudi Medical Horizons Journal 1 (1):2-13. https://doi.org/10.54293/smhj.v1i1.16.