Affiliation: | 1. Department of Community‐Based Medical Education, Nagoya City University Graduate School of Medical Sciences, , Nagano;2. Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, , Nagano;3. Center for Health, Safety and Environmental Management, Shinshu University, , Matsumoto;4. Internal Medicine, Tokyo Metropolitan Komagome Hospital, , Tokyo;5. Division of Gastroenterology, Tohoku University Graduate School of Medicine, , Sendai;6. The Third Department of Internal Medicine, Kansai Medical University, , Hirakata;7. Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, , Tokyo;8. Department of Gastroenterology, Tokyo Women's Medical University Yachiyo Medical Center, , Tokyo;9. Medical Informatics Division and Internal Medicine, Gastroenterology, Shinshu University Hospital, , Matsumoto;10. Department of Pathology, Kurashiki Central Hospital, , Kurashiki, Japan;11. Department of Gastroenterology, Nagano Municipal Hospital, , Nagano;12. Department of Gastroenterology, Shinshu University School of Medicine, , Matsumoto;13. Department of Gastroenterology, Kurashiki Central Hospital, , Kurashiki, Japan |