Affiliation: | (1) Department of Gastroenterology and Hepatology, Koshigaya Hospital, Dokkyo University School of Medicine, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama, Japan;(2) 2nd Department of Internal Medicine Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, 113 Bunkyo-ku, Tokyo, Japan;(3) Department of Pathology, Jikei University, School of Medicine, 3-25-8 Nishi-Shin'bashi, Minato-ku, Tokyo, Japan |