Affiliation: | (1) Center for Health, Safety and Environmental Management, Shinshu University, Matsumoto, Japan;(2) Department of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan;(3) Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan;(4) Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan;(5) Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan |