^○Masanobu Kageoka¹, Yasuhiko Maruyama¹, Akihiko Ohata¹, Tomohiro Terai¹, Teruyuki Shimura¹, Masanao Kaneko¹, Koudai Yamamoto¹, Fumitoshi Watanabe² (1.Div. of Gastroenterology,Fujieda General Municipal Hospital,Fujieda,Japan, 2.Hamamatsu Minami Hospital,Hamamatsu,Japan)

^○Ryo Kodama, Hiroyasu Ushimaru (Dept. of Gastroenterology, Ja Nagano Koseiren Shinonoi General Hospital, Nagano, Japan)

^○Daisuke Goto, Noriyo Urata, Hirofumi Kawamoto (Dept. of General Internal Medicine 2, Kawasaki Medical School, Okayama, Japan)

^○Nobuhiko Fukuba¹, Ichiro Moriyama², Masahito Aimi¹, Tsuyoshi Mishiro¹, Naoki Oshima¹, Takafumi Yuki³, Kousaku Kawashima¹, Norihisa Ishimura¹, Shuichi Sato³, Shunji Ishihara¹, Yoshikazu Kinoshita¹ (1.Dept. of Internal Medicine Ii, Shimane University School of Medicine, Izumo, Japan, 2.Division of Cancer Center, Shimane University Hospital, Izumo, Japan, 3.Division of Gastrointestinal Endoscopy, Shimane University Hospital, Izumo, Japan)

^○Yu Akazawa, Masahiro Otani, Atusi Arituka, Yasusi Saito, Tomoko Tanaka, Yoshihiko Ozaki, Kazuto Takahashi, Yatsushi Naito, Kazuya Ofuji, Hidetaka Matsuda, Tomoyuki Nemoto, Katsushi Hiramatsu, Hiroyuki Suto, Yasunari Nakamoto (Div. of Gastroenterology, University of Fukui, Fukui, Japan)

^○Shinji Miyajima¹, Akihiro Okano¹, Masaya Ohana¹, Akina Omura¹, Takaaki Yoshikawa¹, Makoto Okabe¹, Ryutaro Maruoka¹, Toshiyuki Morisawa¹, Taro Ueo¹, Hajime Kida¹, Satoru Okinaga^1,2, Fusako Kusumi¹ (1.Dept.Of Gastroenterology,Tenri Hospital,Nara,Japan, 2.Endoscopy center,Tenri Hospital,Nara,Japan)