1. Division of Gastroenterology Tohoku University Graduate School of Medicine MiyagiJapan
2. Department of Medicine Division of Gastroenterology Jichi Medical University TochigiJapan
3. Third Department of Internal Medicine University of Toyama ToyamaJapan
4. Department of Gastroenterology Dokkyo Medical University School of Medicine TochigiJapan
5. Department of Gastroenterology Aichi Cancer Center Hospital AichiJapan
6. Departments of Cancer Survey and Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapan
7. Second Department of Internal Medicine Wakayama Medical University WakayamaJapan
8. First Department of Internal Medicine Gifu University Hospital GifuJapan
9. Department of Gastroenterology and Hepatology Faculty of Medicine Kindai University OsakaJapan
10. Center for Gastroenterology Teine Keijinkai Hospital HokkaidoJapan
11. Department of Gastroenterology and Hepatology Yokohama City University School of Medicine KanagawaJapan
12. Department of Gastroenterology and Hepatology Graduate School of Medicine Dentistry, and Pharmaceutical Sciences Okayama University OkayamaJapan
13. Department of Gastroenterology Graduate School of Medicine The University of Tokyo TokyoJapan
14. Department of Gastroenterology Saitama Medical University International Medical Center SaitamaJapan
15. Department of Gastroenterology Graduate School of Medicine Juntendo University TokyoJapan
16. Department of Gastroenterology and Neurology Faculty of Medicine Kagawa University KagawaJapan
17. Division of Gastroenterology Department of Medicine Kurume University School of Medicine FukuokaJapan
18. Department of Gastroenterology JA Onomichi General Hospital HiroshimaJapan
19. Division of Medical Oncology Cancer Research Institute Kanazawa University IshikawaJapan
20. Department of Gastroenterology Teikyo University Mizonokuchi Hospital KanagawaJapan
21. Department of Gastroenterology Japanese Red Cross Date Hospital HokkaidoJapan
22. Department of Gastroenterology Aizu Medical Center Fukushima Medical University Fukushima Japan
23. Division of Gastroenterology and Hepatology Department of Medicine Nihon University School of Medicine TokyoJapan