Affiliation: | (1) Department of Gastroenterology, Takeda General Hospital, 28-1, Ishida Moriminami-cho, Fushimi, Kyoto, 601-1495, Japan, JP;(2) Second Department of Internal Medicine, Osaka Medical College, 2-7, Daigakucho, Takatsuki, 569-8686, Osaka, Japan, JP |