1. Department of Gastroenterology Tochigi Cancer Center TochigiJapan
2. Department of Gastrointestinal Oncology Osaka International Cancer Institute OsakaJapan
3. Department of Gastroenterology NTT Medical Center Tokyo Japan
4. Division of Gastroenterology Cancer Institute Hospital Tokyo Japan
5. Endoscopy Division National Cancer Center Hospital Tokyo Japan
6. Department of Gastroenterology Graduate School of Medicine The University of Tokyo TokyoJapan
7. Division of Endoscopy Shizuoka Cancer Center ShizuokaJapan
8. Department of Gastroenterology Okayama University Hospital OkayamaJapan
9. Department of Gastroenterology and Endoscopy National Cancer Center Hospital East ChibaJapan
10. Division of Research and Development for Minimally Invasive Treatment Cancer Center Keio University School of Medicine TokyoJapan
11. Department of Gastroenterology and Hepatology Gunma University Graduate School of Medicine GunmaJapan
12. Department of Gastroenterology Juntendo University Hospital TokyoJapan
13. Department of Gastroenterology Ishikawa Prefectural Central Hospital IshikawaJapan
14. Department of Gastroenterology Hanwa Sumiyoshi General Hospital OsakaJapan
15. Department of Gastroenterology Takarazuka Municipal Hospital HyogoJapan
16. Division of Gastroenterology Department of Medicine Showa University School of Medicine TokyoJapan
17. Department of Gastroenterology NHO Shikoku Cancer Center EhimeJapan
18. Department of Internal Medicine Japan Community Healthcare Organization Osaka Hospital OsakaJapan
19. Department of Gastroenterology Chiba Cancer Center ChibaJapan
20. Department of Internal Medicine Japan Community Healthcare Organization Funabashi Central Hospital ChibaJapan
21. Department of Gastroenterology and Hepatology Tokyo Medical University TokyoJapan
22. Department of Surgery Gunma Chuo General Hospital GunmaJapan
23. Department of Internal Medicine Yamagata Prefectural Central Hospital YamagataJapan
24. Department of Internal Medicine Yamagata Prefectural Kahoku Hospital Yamagata Japan
25. Department of Medical Statistics Toho University TokyoJapan
26. Department of Molecular‐Targeting Cancer Prevention Kyoto Prefectural University of Medicine Kyoto Japan