^○Masaru Nakano^1,2, Taku Kobayashi², Mayuko Kato¹, Yukari Wada¹, Tadae Mori², Junko Shibata¹, Hiroshi Serizawa^1,2, Makoto Naganuma³, Toyomi Ishibashi², Satoko Umeda², Noriaki Watanabe², Toshifumi Hibi² (1.Center For Diagnostic and Therapeutic Endoscopy, Kitasato University Kitasato Institute Hospital, Tokyo, Japan, 2.Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan, 3.Center for Diagnostic and Therapeutic Endoscopy, School of Medicine, Keio University, Tokyo, Japan)

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

^○Nagamu Inoue, Yasushi Iwao, Juntaro Matsuzaki, Toshifumi Yoshida, Yoshinori Sugino (Center For Preventive Medicine, Keio University School of Medicine, Tokyo, Japan)

^○Masato Kawabe, Takashi Morimoto, Hiroki Mori, Hironori Konuma, Kazunori Yokoi, Hiroo Fukada, Youichi Akazawa, Miho Yoshimura, Yuuki Igusa, Takashi Hasimoto, Hironao Okubo, Akihisa Miyazaki (Dept. of Gastroenterol., Juntendo Univ. Nerima Hosp., Tokyo, Japan)

^○Shingo Kato, Taisuke Kobayashi, Kazuhito Kani, Ryuichi Yamamoto, Sumiko Nagoshi, Koji Yakabi (Dept.Of Gastroenterology and Hepatology, Saitama Medical Center, Saiama Medical Univ., Saitama, Japan)