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

^○Koichiro Kawaguchi¹, Kazuo yashima¹, Masaru Ueki² (1.Div. of Medicine and Clinical Science, Tottori Univ., Tottori, Japan, 2.Center for promoting next-generation highly advanced medicine, Tottori Univ., Tottori, Japan)

^○Hiroaki Yamada, Osamu Motohashi, Ken Nishimura, Nrisuke Nakayama, Yasuhiro Inokuti, Shuntarou Inoue, Maki Kobayashi, Kana Kudo (Kanagawa Cancer Center,Dept. of Medical Gastroenterology,Kanagawa,Japan)

^○Hideto Shimokoube, Yoko Kitamura, Akira Kakutani, Kohei Fukumoto, Koujirou Mori, Saiyu Tanaka, Tomoyuki Ohno, Kazuyuki Kanemasa (Dept. of Gastroenterology and Hepatorogy, Nara City Hospital, Nara, Japan)

^○Koji Takahashi, Hidetoshi Aoki, Satoshi Teramae, Ushio Tamura, Kanako Otsuka, Toshihiro Omoya, Kenichi Kitazoe, Yasuhiro Suzuki, Jiro Nakamoto, Hiroshi Shibata, Mitsuyasu Yano (Dept. of Gastroenterology, Tokushima Prefectural Central Hospital, Tokushima, Japan)