Affiliation: | (1) Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kawahara-cho 54, Shogoin, Sakyo, Kyoto 606-8507, Japan;(2) Department of Geriatric Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan;(3) Department of Gastroenterology, Kansai Medical University, Osaka, Japan |