1. Department of Physical Therapy, Faculty of Applied Medical Sciences, King Abdulaziz University, Saudi Arabia
2. Kasr Al-Aini Teaching Hospitals, Cairo University, Egypt
3. King Fahd Medical Research Center, King Abdulaziz University, Saudi Arabia
4. Faculty of Nursing, King Abdulaziz University: P.O. Box 22246, Jeddah 4929, Saudi Arabia