1. Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
2. Digestive Endoscopy Unit, Università Cattolica del Sacro Cuore, Rome, Italy
3. Division of Gastroenterology, Hepatology and Nutrition, University of Florida, Gainesville, Florida, United States
4. Digestive Disease Center, CHA Budang Medical Center, CHA University, Seongnam, Korea
5. Department of Surgery, Section of Minimally Invasive Surgery, NorthShore University Health System, Evanston, Illinois, United States
6. Division of Gastroenterology, Hepatopancreatology and Digestive Oncology, Erasme University Hospital, Université Libre de Bruxelles
7. Surat Institute of Digestive Sciences, Surat, India
8. Division of General Surgery, University of South Florida Morsani College of Medicine, Tampa, Florida, United States
9. Division of Gastroenterology, Complejo Hospitalario de Navarra, Pamplona, Spain
10. Department of Gastroenterology, Kings College Hospital NHS Foundation Trust, London, UK
11. Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio, United States
12. Division of Gastroenterology and Hepatology, McGill University Health Center, McGill University, Montreal, Quebec, Canada