مقال بحثي وصول مفتوح Unexpected Alloimmunization in a Young Sickle Cell Disease Patient: The Role of Duffy Antigen in Transfusion Management and Malaria Resistance Hamza Haj Mohamad, Amna Yahya, Shahd Abuhijleh وآخرون · مجلة عُمان الطبية · 2026