1. Faculty of Medicine, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
2. Department of Surgery, Faculty of Medicine, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
3. Department of Neurology, Faculty of Medicine, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia