1. Department of Internal Medicine, Tokyo Metropolitan; Komagome Hospital; Tokyo Japan
2. Department of Gastroenterology; Japanese Red Cross Nagoya Daini Hospital; Nagoya Japan
3. Department of General Internal Medicine; Hiroshima University Graduate School of Biomedical & Health Science; Hiroshima Japan
4. Department of Diagnostic Pathology; Kobe University; Kobe Japan
5. Department of Medicine; Teikyo University School of Medicine; Tokyo Japan
6. Department of Community-Based Medical Education; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
7. Department of Medicine, Gastroenterology; Shinshu University; Matsumoto, Nagano Japan
8. Department of Gastroenterology; Second Teaching Hospital; Fujita Health University; Nagoya Japan
9. Department of Radiology; Kanazawa University Graduate School of Medical Sciences; Kanazawa Japan
10. Department of Gastroenterology; Tokyo Womens’ Medical University Yachiyo Medical Center; Yachiyo Japan
11. Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
12. Department of Gastroenterology and Hepatology; Tokyo Medical University; Tokyo Japan
13. Department of Anatomic Pathology; Kurashiki Central Hospital; Kurashiki Japan
14. Division of Gastroenterology; Tohoku University Graduate School of Medicine; Sendai Japan
15. Department of Endoscopy; Yokohama City University Hospital; Yokohama Japan
16. Department of Gastroenterology; Tokyo Takanawa Hospital; Tokyo Japan
17. Department of Gastroenterology; Graduate School of Medicine; Juntendo University; Tokyo Japan
18. Department of Gastroenterology; Tokyo Womens’ Medical University; Tokyo Japan
19. Endoscopy Center; Chiba University Hospital; Chiba Japan
20. Division of Gastroenterology; South-Miyagi Medical Center; Ohgawara Japan
21. Department of Internal Medicine; Matsumoto Dental University; Matsumoto Japan
22. Kansai Electric Power Hospital; Osaka Japan
23. The Third Department of Internal Medicine; Division of Gastroenterology and Hepatology; Kansai Medical University; Moriguchi Japan
24. Faculty of Medicine; Departments of Gastroenterology and Gastroenterological, General, Breast, and Thyroid Surgery; Yamagata University; Yamagata Japan
25. Division of Hepato-Biliary Pancreatic Surgery; Tohoku University Graduate School, of Medicine; Sendai Japan
26. Department of Hepato-Biliary-Pancreatic and Gastrointestinal Surgery; School of Medicine; International University of Health and Welfare; Ichikawa Japan