1. Department of Gastroenterology, Graduate School of Medicine; The University of Tokyo; Tokyo Japan
2. Division of Gastroenterology, Department of Medicine; Chulalongkorn University; Bangkok Thailand
3. Department of Gastroenterology and Hepatology; Singapore General Hospital; Singapore Singapore
4. Department of Surgery, Endoscopic Center, Prince of Wales Hospital; The Chinese University of Hong Kong; Hong Kong China
5. Endoscopic Division; National Taiwan University Hospital, National Taiwan University; Taipei Taiwan
6. Department of Internal Medicine; University of Ulsan College of Medicine, Asan Medical Center; Seoul Korea
7. Department of Surgery; Rajavithi Hospital; Bangkok Thailand
8. Asian Institute of Gastroenterology; Hyderabad India
9. Department of Gastroenterology and Hepatology; Changi General Hospital; Singapore Singapore
10. Department of Gastroenterology; Saitama Medical University International Medical Center; Saitama Japan
11. Department of Gastroenterology; Hokkaido Cancer Center; Sapporo Japan
12. Department of Gastroenterology and Hepatology; Hokkaido University Hospital; Sapporo Japan
13. First Department of Internal Medicine; Gifu University Hospital; Gifu Japan
14. Department of Gastroenterology and Hepatology; Tokyo Medical University; Tokyo Japan
15. Division of Endoscopy; Hokkaido University Hospital; Sapporo Japan
16. Department of Gastroenterology and Hepatology; Kinki University Faculty of Medicine; Osaka-sayama Japan
17. Department of Gastroenterology; Onomichi General Hospital; Onomichi Japan
18. Prince Court Medical Center; Kuala Lumpur Malaysia
19. Digestive Disease Center and Research Institute, Department of Internal Medicine; Soon Chun Hyang University School of Medicine; Bucheon/Seoul Korea
20. Department of Gastroenterology; Teikyo University Mizonokuchi Hospital; Kanagawa Japan
21. Department of Gastroenterology; Fukushima Medical University, Aizu Medical Center; Aizuwakamatsu Japan
22. Division of Gastroenterology and Hepatology, Department of Internal Medicine; Toho University Ohashi Medical Center; Tokyo Japan