^○Sumio Iio, Toshio Kuwai, Akiyoshi Tsuboi, ken Yamashita, Kazuki Boda, Takeshi Mori, Toshiki Yamaguchi, Atsushi Yamaguchi, Hirotaka Kono, Hiroshi Kono (Dept. of Gastroenterology, Kure Medical Center and Chugoku Cancer Center, Kure, Japan)

^○Kiyoyuki Kobayashi, Hideki Kamada, Takuma Yamashita, Ryoichi Okura, Takayuki Fujimori, Kiyohito Kato, Tsutomu Masaki (Dept. of Gastroenterology & Neurology,Faculty of Medicine,Kagawa University,Kagawa,Japan)

^○Eriko Nakano, Atsushi Kanno, Atsushi Masamune, Naoki Yoshida, Seiji Hongo, Shin Miura, Tetsuya Takikawa, Shin Hamada, Kiyoshi Kume, Kazuhiro Kikuta, Morihisa Hirota, Toru Shimosegawa (Div. of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan)

^○Atsuyoshi Mizukami, Kouichirou Matsuda, yatsugi Noda, Kousuke Ishida, Ryoutarou Nakai, Yasumasa Hara, Masaaki Yano, Fumitaka Arihara, Yousuke Horita, Mitsuru Matsuda, Akito Sakai (Dept. of Internal Medicine,Toyama Prefectural Central Hospital,Toyama,Japan)

^○Hiroki Kitamoto, Yohei Taniguchi, Masaya Wada, Takahiko Ito, Kazuhiro Matsumoto, Kazuya Hosotani, Tatsunori Minamide, Masashi Fukushima, Shuko Morita, Naoto Shimeno, satoko inoue, Hiroshi Tei, Yoshiki Suginoshita, Tetsuro Inokuma (Dept. of Gastroenterology, Kobe City Medical Center General Hospital, Hyogo, Japan)