1. Division of Gastroenterology Showa University Fujigaoka Hospital Yokohama Japan
2. Department of Gastroenterology Toranomon Hospital Tokyo Japan
3. Department of Gastroenterology Osaka City University Graduate School of Medicine Osaka Japan
4. Department of Gastroenterology Saitama Medical University International Medical Center Hidaka Japan
5. Department of Gastroenterology Graduate School of Medicine The University of Tokyo Tokyo Japan
6. Department of Gastroenterology and Hepatology National Hospital Organization Tokyo Medical Center Tokyo Japan
7. Department of Endoscopy Hiroshima Prefectural Hospital Hiroshima Japan
8. Department of Endoscopic Medicine Mie University Hospital Tsu Japan
9. Endoscopy Division National Cancer Center Hospital Tokyo Japan
10. Digestive Department Zhejiang Provincial Hospital of TCM Hangzhou China
11. Section of Gastroenterology Department of Medicine Philippine General Hospital University of the Philippines Manila Philippines
12. Department of Gastrointestinal Oncology Osaka International Cancer Institute Osaka Japan