1. Digestive and Lifestyle Diseases Department of Human and Environmental Sciences Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
2. Department of Gastroenterology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
3. Division of Hepatology Department of Internal Medicine Iwate Medical University Iwate Japan
4. Department of Gastroenterology Graduate School of Medicine Chiba University Chiba Japan
5. Department of Emergency Medicine Chiba Kaihin Municipal Hospital Chiba Japan
6. Department of Gastroenterology International University of Health and Welfare Narita Hospital Chiba Japan
7. Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
8. Department of Gastroenterology and Hepatology Juntendo University Shizuoka Hospital Shizuoka Japan
9. Department of Gastroenterology Gifu University Graduate School of Medicine Gifu Japan
10. Department of Gastroenterology and Hepatology Yamaguchi University School of Medicine Yamaguchi Japan
11. Department of Gastroenterology and Hepatology Saitama Medical University Saitama Japan