^○Masaki Wato, Ichiro Sakakihara, Masaya Ishida, Tomo Kagawa, Sakiko Kuraoka, Koichi Izumikawa, Kumiko Yamamoto, Sakuma Takahashi, Shigetomi Tanaka, Mihoko Matsuura, Shigenao Ishikawa, Toshimi Hasui, Tomoki Inaba (Dept. Gastroenterology, Kagawa Prefectual Central Hospital, Takamatsu, Japan)

^○Masashi Nakamura, Motoyo Ito, Yuki Maegawa, Eri Tanaka, Osamu Tatsumi, Takashi Ueda, Fumitaka Terabe, Hiroyuki Fukui (Yao Municipal Hospital.Osaka,Japan.)

^○Hirotake Hukuda, Kouji Hujimoto, Sho Masaki, Munemasa Nagao, Kana Kumahara, Satoru Kitamura, Tomohiro Yamazaki, Atsushi Nakai, Kenshi Masuo, Eriko Hishitani, Daisuke Nomoto, Kimio Kawasaki, Makoto Umeda, Tsuyoshi Matsumura, Toshiyuki Kimura (Dept. of Gastroenterology, Hyogo Pref. Amagasaki Hosp. Hyogo, Japan)

^○Reina Tanaka, Takao Itoi, Atsushi Sofuni, Fumihide Itokawa, Kentaro Ishii, Syuuziro Tsuji, Takayoshi Tsuchiya, Nobuhito Ikeuchi, Kentaro Kamada, Junko Umeda, Ryousuke Tonozuka, Mitsuyoshi Honjo, Shuntaro Mukai, Mitsuru Fujita, Fuminori Moriyasu (Dept. of Gastroenterology and Hepatology,Tokyo Medical University,Tokyo,Japan)

^○Shoichi Kayaba, So Takahashi, Ryo Ichikawa, Hiroshi Nagai, Rintaro Moroi, Hirohiko Shinkai, Humitake Ishiyama, Kei Yaguchi (Dept. of Gastroenterology, Iwate Prefectural Isawa Hospital, Ohshu, Iwate, Japan)