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

^○Takeshi Tomoda, Hironari Kato, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Yasuhiro Noma, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada, Kazuhide Yamamoto (Dept. of Gastroenterology & Hepatology, Okayama University Hospital, Okayama, Lapan, Japan)

^○Yuji Fujita, Sho Hasegawa, Yusuke Sekino, Kunihiro Hosono, Atsushi Nakajima, Kensuke Kubota (Gastroenterology and Hepatology Yokohama City University School of Medicine, Japan)

^○Ichiro Moriyama¹, Nobuhiko Fukuba², Hiroki Sonoyama², Yasumasa Tada², Akihiko Oka², Masahito Aimi², Tsuyoshi Mishiro², Hiroshi Tobita², Naoki Oshima², Takafumi Yuki³, Kousaku Kawashima², Tatsuya Miyake², Norihisa Ishimura², Shuichi Sato³, Shunji Ishihara², Yoshikazu Kinoshita² (1.Div. of Cancer Center, Shimane Univ. Hospital, Japan, 2.Dept. of Internal medicine II, Sch. of Med. Shimane Univ., 3.Div. of GI endoscopy, Shimane Univ. Hospital)

^○Hiroshi Yamauchi, Mitsuhiro Kida, Rikiya Hasegawa, Takaaki Matsumoto, Takahito Mishima, Toru Kaneko, Shuko Tokunaga, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Miyoko Takezawa, Hidehiko Kikuchi, Maya Watanabe, Hiroshi Imaizumi, Wasaburo Koizumi (Dept. of Gastoroenterology, Kitasato Univ Hosp, Kanagawa, Japan)

^○Harutoshi Sugiyama, Toshio Tsuyuguchi, Osamu Yokosuka (Dept. of Gastroenterology and Nephrology, Graduate School of Medicine, Chiba Univ., Japan)

^○Senju Hashimoto¹, Naoki Omiya², Kentaro Yoshioka¹, Naoto Kawabe¹, Michihito Murao¹, Takuji Nakano¹, Hiroaki Shimazaki¹, Toshiki Kan¹, Kazunori Nakaoka¹, Yuka Takagawa¹, Masashi Ohki¹, Takamitsu Kurashita¹, Tomoki Takamura¹, Ichiro Hirata² (1.Dept. of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Toyoake, Japan, 2.Department of Gastroenterology, Fujita Health University, Toyoake, Japan)

^○soichiro kawahara, masakuni fujii, Junji Shiode, yuki okamoto, Yuki Ishihara, Mitsuhiro Kaneto, Shunsuke Saito, mamoru ito, Shuhei Ishiyama, Akiko Fujiwara, Junichiro Nasu, Masao Yoshioka (Saiseikaibyouin in Okayama, Japan)

^○Takeshi Ezaki, Hideyuki Shiomi, Yasuhiro Okabe, Seiji Fujigaki, Koudai Yamanaka, Yuichi Hirata, Yousuke Yagi, Takashi Nakagawa, Takao Iemoto, Arata Sakai, Takashi Kobayashi, Mamoru Takenaka, Yuto Yoshinaka, Yoshifumi Arisaka, Hiromu Kutsumi, Takeshi Azuma (Dept. of Gastroenterology Kobe Univerity School of Medicine, Hyogo, Jap, Japan)

^○Hiroyuki Sugimoto¹, Yoshiki Hirooka², Hiroki Kawashima¹, Eizaburo Ohno¹, Daijuro Hayashi¹, Takamichi Kuwahara¹, Tomomasa Morishima¹, Manabu Kawai¹, Hiroki Suhara¹, Tomoaki Takeyama¹, Takeshi Yamamura², Kazuhiro Furukawa¹, Kohei Funasaka², Masanao Nakamura¹, Ryoji Miyahara¹, Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan, 2.Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan)