1. Blood Transfusion Services, King Abdulaziz University Hospital; King Abdulaziz University; Jeddah Saudi Arabia
2. Department of Medicine, Faculty of Medicine; King Abdulaziz University; Jeddah Saudi Arabia
3. Special Infectious Agents Unit, King Fahd Medical Research Center; King Abdulaziz University; Jeddah Saudi Arabia
4. Department of Medical Microbiology and Parasitology, Faculty of Medicine; King Abdulaziz University; Jeddah Saudi Arabia
5. Clinical Pathology Department; National Liver Institute, Menoufiya University; Shebin El-Kom Egypt
6. Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences; King Abdulaziz University; Jeddah Saudi Arabia