1. King Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia.
2. Department of General Surgery, Al Ansar General Hospital, Medina, Saudi Arabia.
3. Department of Medicine, Al Ansar General Hospital, Medina, Saudi Arabia.
4. King Abdulaziz Medical City/King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia.