1. Division of Gastroenterology and Hepatology, Department of Internal MedicineNippon Medical School Tokyo
2. Core Research Facilities for Basic Science, Research Center for Medical SciencesJikei University School of Medicine Tokyo
3. Department of GastroenterologyOgaki Municipal Hospital Ogaki
4. Department of HepatologyKagawa Prefectural Central Hospital Takamatsu
5. Department of GastroenterologyNational Hospital Organization Kyushu Medical Center Fukuoka
6. Department of Internal MedicineSt. Marianna University School of Medicine Kawasaki
7. Department of Gastroenterology and HepatologyShinmatsudo Central General Hospital Matsudo
8. Department of Gastroenterology, Internal MedicineKitasato University School of Medicine Sagamihara
9. Department of Internal Medicine, Division of Gastroenterology HepatologyTokyo Medical University Ibaraki Medical Center Ibaraki
10. Department of Internal Medicine, Division of Gastroenterology and HepatologyTokyo Metropolitan Bokutoh Hospital Tokyo
11. Department of Internal Medicine, Division of GastroenterologyNippon Medical School Chiba Hokusoh Hospital Inzai Japan