1. Department of Cardiac Science, Unit of Cardiac Surgery, College of Medicine, King Saud University , Riyadh, Kingdom of Saudi Arabia
2. Department of Surgery, Unit of Trauma, College of Medicine, King Saud University , Riyadh, Kingdom of Saudi Arabia
3. Department of Surgery, Unit of Thoracic Surgery, College of Medicine, King Saud University , Riyadh, Kingdom of Saudi Arabia
4. Department of Rehabilitation Science, College of Applied Medical Science, King Saud University , Riyadh, Kingdom of Saudi Arabia