^○Toshiya Yamada¹, Kengo Kasuga¹, Takehiro Shimizu¹, Ayaki Sato¹, Masako Nagasaka¹, Tomoyuki Masuda¹, Takashi Ueno¹, Osamu Otsuka¹, Kenichi Izuka¹, Mitsuo Toyoda¹, Hirotaka Arai¹, Hisashi Takayama¹, Takehiko Abe¹, Hiroko Sato², Hidetoshi Yasuoka³, Shiko Kuribayashi³, Masafumi Mizuide³ (1.Dept. of Gastroenterology,Maebashi Red Cross Hospital,Maebashi,Gunma,Japan, 2.Department of Gastroenterology,Saitama Medical University International Medical Center,Hidaka-shi,Saitama,Japan., 3.Department of Molecular and Clinical Medicine,Gunma University Graduate School of Medicine,Maebashi,Gunma,Japan)

^○Yasuhide Ochi, Osamu Hasebe, Takayuki Watanabe, Ayako Seki, Yugo Iwaya, Toshiharu Tatai, Tomo Yamazaki (Dept. of Gatroenterology, Nagano Municipal Hospital, Japan)

^○Kaiki Anbe, Fumihiro Okumura, Yuta Suzuki, Shigeki Fukusada, Tadahisa Inoue, Kenta Kachi, Takanori Ozeki, Hiroyasu Iwasaki, Hirotada Nishie, Takashi Mizushima, Hitoshi Sano (Div. of Gastroenterology,Gifu Prefectural Tajimi Hospital,Gifu,Japan)

^○Takahito Mishima, Hiroshi Yamauchi, Mitsuhiro Kida, Rikiya Hasegawa, Takaaki Matsumoto, Toru Kaneko, Shuko Tokunaga, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi (Gastroenterology of Kitasato Univ,Kanagawa,Japan)

^○Hiroaki Hashimoto, Seiichiro Mitani, Shinya Sato, Satoru Hirose, Kazuhiro Tada, Noriyuki Hoki, Tatsuichi An (Dept. of Gastroenterology, Bellland General Hospital , Osaka, Japan)