1. Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
2. Basic Sciences, College of Applied of Medical Sciences, Albaha University, Albaha, Saudi Arabia
3. Lecturer of Public Health and Community Medicine, Faculty of Medicine, Cairo University, Giza, Egypt
4. Department of Human Physiology, Faculty of Medicine, Cairo University, Giza, Egypt
5. Department of Human Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia