1. Department of General Surgery, King Abdulaziz Specialist Hospital, Taif, Saudi Arabia
2. Department of General Surgery and Critical Care Medicine, Riyadh, Saudi Arabia
3. Department of General Surgery, Minimal Invasive Surgery, King FahadMedical City, Riyadh, Saudi Arabia
4. Surgical Oncology Department, King Fahad Medical City, Riyadh, Saudi Arabia
5. Department of General Surgery, College of Medicine, Taif University, Taif, Saudi Arabia
6. Surgical Oncology Department, MIS and Bariatric Surgery, King Fahad Medical City, Riyadh, Saudi Arabia