1. Department of Basic Medical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia;
2. Department of Physiology, Kasr Al-Aini Faculty of Medicine, Cairo University, Cairo, Egypt;
3. Department of Pathology, Faculty of Medicine, Menoufia University, Egypt;
4. Department of Clinical Sciences, Family Medicine, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia;
5. Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia