^○Yutaka Nagata, Yuta Fuyuno, Motohiro Esaki (Dept. of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan)

^○Tetsuya Ishida¹, Tetsuya Ueo¹, Kazunari Murakami², Ryoichi Narita¹, Yuka Yanai¹, Kazumi Togo¹, Masahide Fukuda¹, Terumitsu Motomura¹ (1.Dept. of Gastroentelorogy, Oita Red Cross Hospital, Oita, Japan, 2.Dept. of Gatroentelorogy, Oita Univesity, Oita, Japan)

^○Akihiro Yamada, Ken Takeuchi, Yasuo Suzuki, Taiki Sasaki, Hiroaki Iwashita, Masao Katsumata, Miyuki Miyamura, Hidemasa Kikuchi, Tsunetaka Arai, Ryouta Iwasa, Ryuichi Furukawa, Koji Sono, Aisaku Osamura, kentaro Nakamura, Hiroshi Aoki, Yasushi Yoshimatsu, Yukiko Tsuda, Nobuo Takada (Div.Of Gastroenterology, Dept. of Internal Medicine, Sakura Medical Center, Faculty of Med., Toho Univ., Chiba, Japan)

^○Masaki Yamashita, Hiroshi Yasuda, Yoshihito Yoshida, Hiroyasu Nakano, Yoshinori Sato, Yoshiko Ikeda, Shinya Ishigooka, Shunichiro Ozawa, Kosuke Hosoya, Yasumasa Matsuo, Hiroyuki Yamamoto, FUMIO Ito (Divisin of Gastroenterology and Hepatology, St. Marianna University School of Medicine, Japan)

^○Kazuhiro Watanabe (Dept. of Endoscopy and Endoscopic Surgery, Kanto Central Hospital, Japan)