1. Department of Clinical Laboratory Sciences, College of Applied Medical Sciences; King Saud University; Riyadh Saudi Arabia
2. Department of Basic Medical Science, College of Medicine; King Saud bin Abdulaziz University for Health Sciences; Riyadh Saudi Arabia
3. Department of Physiology; King Saud University; Riyadh Saudi Arabia
4. Transfusion Medicine Unit; King Khalid University Hospital, King Saud University; Riyadh Saudi Arabia