1. Second Department of Internal Medicine, Osaka Medical and Pharmaceutical University
2. Endoscopy Centre, Osaka Medical and Pharmaceutical University Hospital
3. Department of Internal Medicine, National Defense Medical College
4. Department of Gastroenterology and Neurology, Akita University Graduate School of Medicine
5. Division of Gastroenterology, Department of Internal Medicine, Aichi Medical University School of Medicine
6. Department of Gastroenterology, Juntendo University School of Medicine
7. Department of Gastroenterology, Faculty of Medicine, Hyogo Medical University
8. Department of Gastroenterology, Faculty of Medicine, Oita University
9. Department of Gastroenterology, Asahi University Hospital
10. Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University
11. Department of Gastroenterology, Asahikawa-Kosei General Hospital
12. Department of Gastroenterology, Endoscopy Center, Tokyo Medical University Ibaraki Medical Center
13. Department of Gastroenterology, Dokkyo Medical University
14. Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences
15. Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine
16. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kawasaki Medical School
17. Division of Gastroenterology, Fujieda Municlpal General Hospital
18. Department of Gastroenterology and Hepatology, Gunma University
19. Center for Clinical Research, Hamamatsu University Hospital
20. Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine
21. Department of Gastroenterology, Kanazawa Medical University
22. Department of Surgery, Fuji City General Hospital