^○Yuki Karasawa, Nobuo Toda, Satoshi Kawamura, Yuki Hayata, Tomoharu Yamada, Mari Yamagami, Koki Kawanishi, Koki Sato, Kentaro Kojima, Takamasa Oki, Toshihiko Arizumi, Michiharu Seki, Kazumi Tagawa (Dept. of Gastroenterology, Mitsui Memorial Hospital, Tokyo, Japan)

^○Eiichi Yamamura, Masatsugu Nagahama, Yuichi Takano, Misako Tohata, masashi Hayashi, Reika Suzuki, Syotaro Hanamura, Kunio Asonuma, Yuichiro Kuroki, Naotaka Maruoka, Kazuaki Inoue, Hiroshi Takahashi (Div. of Gastroenterology, Showa University Fujigaoka Hospital,Kanagawa,Japan)

^○Shin Haba, Shinji Yoshii, Yasuyuki Kawamoto, Mio Matsumoto, Sachiko Shimizu, Akiko Yokoyama, Nobuaki Akakura (Dept. of Gastroenterology, Sapporo Medical Center NTT EC, Japan)

^○Masaaki Yano, Atsuyoshi Mizukami, Yasumasa Hara, Fumitaka Arihara, Yousuke Horita, Kouichirou Matsuda, Mitsuru Matsuda, Akito Sakai, yatsugi Noda (Dept. of Internal Medicine(Gastroenterology),Toyama Prefectural Central Hospital, Toyama, Japan)

^○Shigefumi Omuta, Katsushige Gon, Iruru Maetani (Div. of Gastroenterology Dept. of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan)