1. Department of GastroenterologyJapanese Red Cross Ishinomaki Hospital Ishinomaki Japan
2. Department of Gastroenterology and HepatologyMusashino Red Cross Hospital Musashino Japan
3. Department of GastroenterologyHiroshima Red Cross Hospital and Atomic‐bomb Survivors Hospital Hiroshima Japan
4. Center for Liver‐Biliary‐Pancreatic DiseasesMatsuyama Red Cross Hospital Matsuyama Japan
5. Department of GastroenterologyJapanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
6. Department of Gastroenterology and HepatologyOsaka Red Cross Hospital Osaka Japan
7. Department of GastroenterologyTakamatsu Red Cross Hospital Takamatsu Japan
8. Department of HepatologyJapanese Red Cross Ise Hospital Ise Japan
9. Department of GastroenterologyJapanese Red Cross Asahikawa Hospital Asahikawa Japan
10. Department of GastroenterologyNagano Red Cross Hospital Nagano Japan
11. Department of GastroenterologyMatsue Red Cross Hospital Matsue Japan
12. Department of HepatologyJapanese Red Cross Fukuoka Hospital Fukuoka Japan
13. Department of Internal MedicineJapanese Red Cross Haramachi Hospital Haramachi Japan
14. Department of GastroenterologyJapanese Red Cross Medical Center Tokyo Japan
15. Department of GastroenterologyJapanese Red Cross Nagoya Daini Hospital Nagoya Japan
16. Department of GastroenterologyTakatsuki Red Cross Hospital Takatsuki, Osaka Japan
17. Department of HepatologyJapanese Red Cross Okayama Hospital Okayama Japan
18. Department of Internal MedicineTottori Red Cross Hospital Tottori Japan
19. Department of GastroenterologyJapanese Red Cross Otsu Hospital Otsu Japan
20. Department of GastroenterologyJapanese Red Cross Nagasaki Genbaku Hospital Nagasaki Japan
21. Department of Internal MedicineKaratsu Red Cross Hospital Karatsu Japan
22. Department of GastroenterologyJapanese Red Cross Kyoto Daini Hospital Kyoto Japan
23. Department of GastroenterologyShizuoka Red Cross Hospital Shizuoka Japan
24. Department of GastroenterologyJapanese Red Cross Maebashi Hospital Maebashi Japan