1. Gastrointestinal Endoscopy, Humanitas Mater Domini, Castellanza, Italy
2. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
3. Gastroenterology, AJG Hospitals, Gachibowli, Hyderabad, India
4. Gastroenterology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
5. Gastroenterology Department, Enrique Baltodano Briceno Hospital, Liberia, Costa Rica
6. Pancreatobiliary Endoscopy and Endosonography Division, Istituto Scientifico Universitario San Raffaele, Milano, Italy
7. Gastroenterology Unit, Civil Hospital Giuseppe Mazzini, Teramo, Italy
8. Gastroenterology, Ahli Hospital, Hebron, Palestine, State of
9. Gastroenterology, Asan Medical Center, Songpa-gu, Korea (the Republic of)
10. Bergen Research group for Gastrointestinal Endoscopy (BRAGE), Department of Medicine, Haukeland University Hospital, Bergen, Norway
11. Division of Upper Gastrointestinal and Metabolic Surgery, Prince of Wales Hospital, Hong Kong, Hong Kong
12. Internal Medicine, Soon Chung Hyang University School of Medicine, Bucheon, Korea (the Republic of)
13. Gastroenterology, University of Verona, Verona, Italy
14. Division of Hospital and Ambulatory Medicine, and Pancreas Research Unit, Department of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
15. Internal Medicine, Gastroenterology and Hepatology Unit, Guglielmo da Saliceto Hospital, Piacenza, Italy
16. Interventional Endoscopy, University of the Philippines Manila, Manila, Philippines
17. Division of Digestive Diseases, University of Cincinnati, Cincinnati, United States
18. Gastroenterology, Azienda Ospedaliera Grande Ospedale Metropolitano Bianchi-Melacrino-Morelli, Reggio Calabria, Italy
19. Endoscopy Unit, IRCCS Humanitas Clinical and Research Center, Rozzano, Milan, Italy
20. Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
21. Gastroenterology, University of Foggia Department of Medical and Surgical Sciences, Foggia, Italy