^○Hiroyuki Sakae¹, Keita Harada¹, Toshio Uraoka^2,3, Shiho Takashima¹, Toshihiro Inokuchi¹, Daisuke Takei¹, Yusaku Sugihara¹, Asuka Nakarai¹, Masahiro Takahara¹, Sayo Kobayashi⁴, Sakuma Takahashi⁵, Shunsuke Saito⁶, Joichiro Hori⁷, Reiji Higashi⁸, Sakiko Hiraoka¹, Hiroyuki Okada⁹, Kazuhide Yamamoto¹ (1.Dept. of Gastroenterology and Hepatology, Okayama Univ. Graduate Sch. of Med., Okayama, Japan, 2.Dept. of Gastroenterology, Tokyo Medical Center, Tokyo, Japan, 3.Cancer Center, Sch. of Med., Keio Univ., Tokyo, Japan, 4.Dept. of Internal Medicine, Fukuyama City Hospital, Hiroshima, Japan, 5.Dept. of Gastroenterology, Kagawa Prefectural Central Hospital, Kagawa, Japan, 6.Dept. of Internal Medicine, Okayama Saiseikai General Hospital, Okayama, Japan, 7.Dept. of Gastroenterology, Fukuyama Medical Center, Hirohima, Japan, 8.Dept. of Internal Medicine, Hiroshima City Hospital, Hiroshima, Japan, 9.Dept. of Endoscopy, Okayama Univ. Hospital, Okayama, Japan)

^○Hiroshi Ishihara¹, Takashi Hisabe¹, Yamasaki kazutomo¹, Tatsuhisa Yasaka¹, Hirano Akikazu¹, kensei Otsu¹, Kazeo Ninomiya¹, Yoitiro Ono¹, Takashi Nagahama¹, Yasuhiro Takaki¹, Fumihito Hirai¹, Toshiyuki Matsui¹, Kenntarou Imamura², Hiroshi Tanabe², Ikeda Keisuke², Haraoka Seiji², Akinori Iwashita², Aomi Yoshiaki³ (1.Depertment of Gastroenterology, Fukuoka University Chikushi Hospital, Chikushino, Japan, 2.Depertment of Pathology, Fukuoka University Chikushi Hospital, Chikushino, Japan, 3.Aomi clinic, Nogata, Japan)

^○Maiko Takita, Tomoaki Tashima, Yohei Minato, Yasushi Matsuyama, Kouichi Nonaka, Ken Ohata, Nobuyuki Matsuhashi (NTT Medical Center Tokyo, Japan)

^○Mitsuru Hirai, Nobuto Hirata, So Nakaji, Naoki Okumura, Masayoshi Kobayashi, Toshiyasu Shiratori, Kenichi Suzuki, Tatsuo Morinushi, Kenji Yamauchi, Shigenobu Yoshimura, Keisuke Kanda (Div. of Gastrointestinal Medicine, Kameda Medical Center, Chiba, Japan)

^○Joichiro Hori, Tatsuya Toyokawa, Isao Fujita, Katsunori Matsueda, shizuma Omote, Yuko Jinno, Yuya Ueda, Shinya Endo, Takako Murakami, Tatsuro Sakata (Dept. of Gastroenterology, Fukuyama Medical Center, Japan)