^○Kazuhiro Mizukami, akirs sonoda, Mitsutaka Shuto, Kazuhisa Okamoto, Ryo Ogawa, Tadayoshi Okimoto, Masaaki Kodama, Kazunari Murakami (Dept. of Gastroenterology, Sch. of Med. Oita Univ., Oita, Japan)

^○Yukiko Asakawa, Fumihiko Iwamoto, Yuya Tsukui, Shoji Kobayashi, Takashi YOshida, Tatsuya Yamaguchi, Tomoyoshi Uetake, Tadashi Sato, Nobuyuki Enomoto (University of Yamanashi Hospital, Japan)

^○Takashi Kitade¹, Masaki Katsurahara¹, Tetsuro Harada², Takashi Sakuno², Kenichiro Nishikawa¹, Shunsuke Tano¹, Reiko Yamada², Hiroyuki Inoue², Yasuhiko Hamada¹, Kyosuke Tanaka¹, Noriyuki Horiki¹, Yoshiyuki Takei² (1.Dept. of Endoscopy, Mie University School of Medicine, Japan, 2.A digestive organ and liver internal medeicine, Mie University School of Medicine)

^○Akiyoshi Tsuboi, Toshio Kuwai, Sumio Iio, Kazuki Boda, ken Yamashita, Takeshi Mori, Toshiki Yamaguchi, Atsushi Yamaguchi, Hirotaka Kono, Hiroshi Kono (Dept. of Gastroenterology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure, Japan)

^○Motohiro Hirao, Masato Komori, Shinnosuke Kudo, Makoto Fukuoka, Kazuki Maesaka, Shinya Kimura, Kumiko Shirai, Toru Okahara, Yukiko Okuda, Masayoshi Konoshita, Shunsuke Yamamoto, Masako Nishiyama, Atsushi Hosui, Harumasa Yoshihara (Dept. of Gastroenterology, Osaka Rosai Hospital, Osaka, Japan)