Affiliation: | 1. Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan;3. Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Kyoto University, Kyoto, Japan;4. Section of Clinical Epidemiology, Department of Community Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan;6. Department of Gastroenterology, Hakodate Municipal Hospital, Hakodate, Hokkaido, Japan;5. Humanitas Clinical and Research Center – IRCCS, Milan, Rozzano, and Department of Biomedical Sciences, Humanitas University, Milan, Rozzano, Italy;7. Department of Gastroenterology and Hepatology, Aster CMI Hospital, Bangalore, Karnataka, India;12. Inflammatory Bowel Disease Center, Tohoku Rosai Hospital, Sendai, Miyagi, Japan |