^○Natsuko Nakakuki, Masayuki Kurosaki, Namiki Izumi, Mayu Higuchi, Koichi Gondo, Hitomi Takada, Shuya Matsuda, Yu Asano, Nobuharu Tamaki, Yutaka Yasui, Shoko Suzuki, takanori hosokawa, Hiroyuki Nakanishi, Kaoru Tsuchiya, Jun Itakura, Yuka Takahashi (Dept. of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan)

^○Jun Takada, Masaya Kubota, Takashi Ibuka, Masahito Shimizu, Hiroshi Araki, Hisataka Moriwaki (Departments of Gastroenterology/Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan)

^○Takahiro Mizuno, Akiko Wakutsu, Kota Otachi, Masamichi Todokoro, Haruhiko Kondo, Yuya Yamashiro, Masayuki Shibata, Masaya Katagiri, Tsuguru Shirai, Yuji MIshina, Masako Fukami, Sayaka Hirai, Yu Omata, Masahiro Akashi, Kunitaka Nagasawa, Azuma Watanabe, Takahiro Sasamoto, Akihiko Tsuchiya, Ko Nishikawa, Masami Yamanaka (Dept. of Gastroenterology,Ageo Central General Hospital,Saitama,Japan)

^○Mai Ego, Yuto Shimamura, kenji Nakamura, Kazuhiro Kosugi, Kaoru Nakano, Takashi Ikeya, Koichi Takagi, Naoki Ishii, Katuyuki Fukuda, Fumio Omata, Yoshiyuki Fujita (Div.Of Gastroenterology, Dept. of Internal Medicine, Sch.Of St, Luke'S International Hospital, Tokyo, Japan)

^○Shinya Yamada, Naoya Tomatsuri, Norimasa Yoshida, Muneji Yasuda, Tomoki Sakakida, takayuki Ota, Shinya Matsumura, Juichiro Yoshida, Takumi Kawakami, Yoshikazu Nakatsugawa, Takahiro Suzuki, Satoru Sekoguchi, Hideki Nakamura, Hideki Sato, Yusuke Okuyama, Hiroyuki Kimura (Dept. of Gastroenterology and Hepatology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan)