^○Atsushi Tanabe, Naotaka Ogasawara, Kunio Kasugai, Masahide Ebi, Takuro Nagoya, Hironori Hoshino, Tomoko Matsumoto, Mayumi Amaike, Kazuhiro Nagao, Mako Nohara, Rieko Hukutomi, Hiroki Kitahora, Akihiro Shimozato, Hisatsugu Noda, Noriko Okaniwa, Kenichiro Yanamoto, Yoshihiro Kondo, Yoshitugi Ito, Yasuhiro Tamura, Akihito Iida, Makoto Sasaki (Div. of Gastroenterology, Dept Gastrointestinal Medicine, Aichi Medical University, Nagakute, Japan)

^○Shohei Oka, Koji Takemoto, Shotaro Okanoue, Eriko Yasutomi, Tomoko Sunami, Hisashi Ishikawa, Daisuke Kawai, Ryuta Takenaka, Hirofumi Tsugeno, Shigeatsu Fujiki (Digestic Endoscopic Center, Tsuyama Central Hospital, Okayama, Japan)

^○Ryoichi Sawada¹, Tomohiro Kato², Shunsuke Kamba¹, Tetsuyoshi Iwasaki¹, Daisuke Ide¹, Nobuhiko Komoike¹, Masahiko Saruta¹, Seiji Arihiro¹, Mika Matsuoka¹, Naoto Tamai², Hiroyuki Aihara², Shoichi Saito², Hisao Tajiri^1,2 (1.Div. of Gastroenterology and Hepatorogy,Dep.Of Internal Medicine,Sch.Ofmed.The Jikei Univ,Tokyo,Japan, 2.Div. of Endoscopy,Dep.of Internal Medicine,Sch.ofMed.The jikei Univ,Tokyo,Japan)

^○shizuma Omote, Tatsuya Toyokawa, Katsunori Matsueda, Yuko Jinno, Yuya Ueda, Shinya Endo, Isao Fujita, Joichiro Hori, Takako Murakami, Tatsuro Sakata (National Hospital Organization Fukuyama Medical Center ,Dept. of Gastroenterology,Fukuyama, Hiroshima,Japan)

^○Shihoko Seki, Hideyuki Chiba, Daisuke Kurihara, Takuma Suto, Keiichi Ashikari, Naoya Kawano, Shinshuke Tsuruta, Akihiro Takahashi, Tomonori Ida, Taiki Morohashi, Toru Goto (Omori Red Cross Hospital, Tokyo, Japan)