^○Makoto Yamawaki¹, Arata Kobayashi¹, Jun Ninomiya¹, Tadashi Maegawa¹, Yasushi Sugiura², Kouzou Kuwabara¹, Tetsuya Mizutani¹, Makoto Kobayashi¹, Motoyoshi Yano¹ (1.Div. of Gastroenterology, Dept. of Internal Medicine, Yokkaichi Municipal Hospital., Mie, Japan, 2.Sugiura clinic,Yokkaichi,Japan)

^○Yuzuru Tajima, naoto sakamoto, Chieko Kakihara, takashi murakami, hirofumi fukushima, Kentaro Izumi, hideaki ritsuno, hiroya ueyama, yoshihiro inami, Tomoyoshi Shibuya, Taro Osada, akihito nagahara, Tatsuo Ogihara, sumio watanabe (Dept. of Gastroenterology,School of Medicine Juntendo University,Tokyo,Japan)

^○Hideyo Goto¹, Ryouichi Nozaki¹, Tomohisa Oowan¹, Yasumitu Saeki², Saburou Hisano², Mituko Fukunaga², Masafumi Tanaka², Syouta Takano², Tadaaki Noguti², Kensaku Fukami², Yasushi Nakamura², Taichi Satou², Sayoko Gotou¹, Kazuaki Iwamoto², Kazutaka Yamada² (1.Takano Hospital, Kumamoto,Japan, 2.Takano Hospital, Kumamoto,Japan)

^○Noritaka Ozawa, Shinpei Doi, Kotaro Matsumoto, Hanae Yamada, Hiromichi Tsunashima, Masatoshi Mabuchi, Yusuke Kajiyama, Kentaro Kikuchi, Ichiro Yasuda (Dept.Of Gastroenterology,Teikyo University Mizonokuchi Hospital,Knagawa,Japan)

^○Yasutoshi Fujii, Takuji Kawamura, Naonori Inoue, Kana Amamiya, Yukino Kawakatsu, Naokuni Sakiyama, Yuki Ueda, Atsushi Shirakawa, Yusuke Okada, Kojiro Nakase, Koichiro Mandai, Azumi Suzuki, Hideaki Kawabata, Masatoshi Miyata, Atsuhiro Morita, Koji Uno, Kiyohito Tanaka, Kenjiro Yasuda (Dept. of Gastroenterology, Red Cross Society Kyoto Daini Hospital, Kyoto, Japan)