^○Tomio Hirakawa¹, Masafumi Inoue², Yasurou Katou² (1.Dept. of Gastroenterology, Yao Tokushukai General Hospital,Osaka, Japan, 2.Dept. of Surgery, Yao Tokushukai General Hospital,Osaka, Japan)

^○Naoki Mizutani, Takashi Ohta, Kenji Fukumoto, Atsushi Maeda, Yuta Myojin, Hiroki Murai, Akira Doi, Shouichi Yoshimizu, Rui Mizumoto, Yuki Arimoto, Mayura Toda, Takeshi Nakamura, Ichiyo Itose, Yoshiki Ito, Hideki Hagiwara, Norio Hayashi (Dept. of Hepatology and Gastrology, Kansai Rosai Hospital, Hyogo, Japan)

^○Tadashi Maegawa¹, Makoto Yamawaki¹, Arata Kobayashi¹, Jun Ninomiya¹, Yasushi Sugiura², Kouzou Kuwabara¹, Tetsuya Mizutani¹, Makoto Kobayashi¹, Motoyoshi Yano¹ (1.Dept. of Gastrointestinal Medicine, Yokkaichi Municipal Hospital., Mie, Japan, 2.Sugiura iin)

^○Masaya Kubota, Yui Takagi, Kensaku Yoshida, Akinori Maruta, Kouki Obara, Hideyuki Ogiso, Tsuneki Miyazaki, Takayasu Ideta, Jun Takada, Fumito Onogi, Takashi Ibuka, Makoto Shiraki, Syouko Imao, Masahito Shimizu, Hiroyasu Ito, Hiroshi Araki (Div. of Gastroenterology, Gifu Univ. Hospital, Gifu, Japan)

^○Hiromichi Tsunashima¹, Shinpei Doi¹, Noritaka Ozawa¹, Masatoshi Mabuchi¹, Yusuke Kajiyama¹, takeshi Kobayashi¹, Kotaro Matsumoto¹, Hanae Yamada¹, yoshihisa Naito², Hisashi Kasugai², Keizo Taniguchi², Tatsuo Yamakawa², Noriko Kobayashi³, Atsushi Nanbu³, Masao Tago³, Kentaro Kikuchi¹, Ichiro Yasuda¹ (1.Dept. of Gastroenterology,Teikyo University Mizonokuchi Hospital,Kanagawa,Japan, 2.Department of Surgery,Teikyo University Mizokuchi Hospital,kanagawa,Japan, 3.Department of Radiology,Teikyo University Mizonokuchi Hospital,kanagawa,Japan)