1. From the Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
2. From the Department of Family and Community Medicine, College of Medicine, King Saud University, Saudi Arabia
3. From the Department of Surgery, College of Medicine, King Saud University, Saudi Arabia
4. From the Department of Pathology, College of Medicine, King Saud University, Saudi Arabia
5. From the Department of Surgery, Asir Central Hospital, Abha, Saudi Arabia
6. From the Department of Medicine, Asir Central Hospital, Abha, Saudi Arabia