^○Shintaro Kawasaki¹, Eisuke Iwasaki², Masahiro Ueda¹, Kazuhiro Minami¹, Tadashi Katayama¹, Takashi Seino¹, Misako Matsushita¹, Masayasu Horibe¹, Juntaro Matsuzaki¹, Yoshiyuki Yamagishi¹, Hajime Higuchi³, Hidekazu Suzuki¹, Yuta Abe⁴, Minoru Kitago⁴, Naoki Hosoe², Kazuhiro Kashiwagi², Makoto Naganuma², Haruhiko Ogata², Takanori Kanai¹ (1.Div. of Gastroenterology and Hepatology, Dept. of Internal Medicine, Keio University School of Medicine, Japan, 2.Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 3.Department of Internal Medicine, Kitasato University Kitasato Institute Hospital., 4.Department of Surgery, Keio University School of Medicine.)

^○Chiaki Inagaki, tatsuya Fujimoto, Tokuhide Sugawara, Miyuki Sensui, Yushi Imai, Masahumi Nishio, Koji Takahashi, Hiroshi Naito, Masashi Yabiki, Kiyofumi Ishii, Masamichi Obu, Mototsugu Fujimori, Yu Yoshida, Yoshihiro Koma, Ryosaku Azemoto (Dept. of Gastroenterology, Kimitsu Central Hospital., Kisarazu, Japan)

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

^○Satoshi Asai¹, naoki fujimoto¹, Kirie Hashimoto¹, Eisuke Nakao¹, Takumi Ichinona¹, Koujirou Tanoue¹, Eisuke Akamine¹, Atsuhiro Ogawa² (1.Dept. of Gastroenterology, Tane General Hospital, Osaka, Japan, 2.Department of Surgery, Tane General Hospital, Osaka, Japan)