1. President, Saudi Society of Colon & Rectal Surgery; Section of Colorectal Surgery, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
2. President, Saudi Gastroenterology Association; Department of Gastroenterology, King Saud University, Riyadh, Saudi Arabia
3. Fellow, Saudi Society of Colon & Rectal Surgery; Section of Colorectal Surgery, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
4. Family Medicine, Ministry of Health, Saudi Arabia
5. Saudi Oncology Society; Department of Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
6. Vice-President, Saudi Gastroenterology Association; Department of Gastroenterology, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
7. Family Medicine, International Medical Center, Jeddah, Saudi Arabia
8. Saudi Chapter of Enterostomal Therapy; Saudi Society of Colon & Rectal Surgery; Colorectal Therapy Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
9. Department of Public Health, Ministry of Health; Saudi Epidemiology Association, Saudi Arabia
10. Faculty of Economics & Administration, King Abdulaziz University, Jeddah, Saudi Arabia
11. Guideline Working Group, Department of Clinical Epidemiology & Statistics, Department of Medicine, Division of Critical Care, McMaster University, Hamilton, Ontario, Canada
12. Department of Clinical Epidemiology & Statistics, McMaster University, Hamilton, Ontario, Canada