1. Neuroscience Center, King Fahad Specialist Hospital Dammam, Dammam, Saudi Arabia
2. College of Medicine, King Saud University Medical City, Riyadh, Saudi Arabia
3. Department of Surgery, Prince Mohammed Ibn Abdulaziz Hospital, Riyadh, Saudi Arabia
4. Department of Pediatrics, King Saud University Medical City, Riyadh, Saudi Arabia
5. Department of Family Medicine & Polyclinics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
6. Ministry of Health, Riyadh, Saudi Arabia
7. Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
8. College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia