Affiliation: | 1. Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan;2. Department of Gastroenterology, Kurashiki Central Hospital, Kurashiki, Japan;3. Department of Internal Medicine, Fukuyama City Hospital, Fukuyama, Japan;4. Department of Internal Medicine, Okayama Saiseikai General Hospital, Okayama, Japan;5. Department of Gastroenterology, Okayama Red Cross General Hospital;6. Department of Internal Medicine, Mitoyo General Hospital, Kannonji, Japan;7. Department of Internal Medicine, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan;8. Department of Internal Medicine, Kagawa Prefectural Central Hospital, Takamatsu, Japan;9. Department of Gastroenterology, National Hospital Organization Iwakuni Medical Center, Iwakuni, Japan;10. Department of Internal Medicine, Japanese Red Cross Society Himeji Hospital, Himeji, Japan;11. Department of Internal Medicine, Tsuyama Central Hospital, Tsuyama, Japan;12. Department of Internal Medicine, Saiseikai Imabari General Hospital, Imabari, Japan;13. Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Fukuyama, Japan;14. Department of Gastroenterology, Okayama City Okayama Citizens Hospital, Okayama, Japan;15. Department of Internal Medicine, Akaiwa Medical Association Hospital, Akaiwa, Japan |