Kiyoshi Hotta1, Nobuhide Oshitani1, Jun-ichi Fujikawa1, Hiroko Hata1, Takao Sakuma2, Masahiro Matsuda1, Sanai Noguchi1, Yoshimasa Oyama3, Yasuhiro Fujiwara4
Departments of 1Gastroenterology, 2Internal Medicine and 3Radiodiagnosis; Aizenbashi Hospital, 5-16-15 Nipponbashi, Naniwa-ku; 4Department of Gastroenterology, Graduate School of Medicine, Osaka City University, Osaka-city, Osaka, Japan.