1. Department of General Surgery, Al Khor Hospital, Hamad Medical Corporation, Qatar
2. Department of Radiology, Al Khor Hospital, Hamad Medical Corporation, Qatar
3. Department of Geriatric Medicine, Al Amal Hospital, Hamad Medical Corporation, Qatar
4. Department of Tropical Medicine, Ain Shams University, Egypt
5. Department of General Medicine, Al Khor Hospital, Hamad Medical Corporation, Qatar