^○Naoki Hirano, Yohei Koyama, Nobuhiro Dan, Yasutsugu Asai, Yuki Takeda, Nobuo Ueki, Ken Ito, Nobuyuki Ooba, Shuta Nishinakagawa, Tatsuya Kojima (Dept. of Gastroenterology, Japan Labour Health and Welfare Organization Tokyo Rosai Hospital)

^○Shozo Osera, Hiroaki Ikematsu, Hiroshi Nakamura, Kenji Takashima, Kensuke Shinmura, Tomohiro Kadota, Masaomi Imajyou, Tomoji Kato, Hiroyuki Morimoto, Yusuke Yoda, Yasunori Oono, Tomonori Yano, KAZUHIRO KANEKO (Dept. of Gastroenterology, Endoscopy Division, National Cancer Center Hospital East, Kashiwa, Chiba, Japan)

^○Hiroshi Takenawa¹, Yumi Satou², Shoko Toda², Osamu Okawa², Yukihiro Nakatani², Wataru Shinomiya², Akinori Hosoya², Kouhei Yoshino², Yuko Hijioka², Hideyuki Horike², Yuko Karakama², Shin Namiki², Yuhki Ogura², Sukenobu Shiba³ (1.Dept. of Endoscopy,Tokyo Metropolitan Tama Medical Center,Tokyo,Japan, 2.Department of Gastroenterology,Tokyo Metropolitan Tama Medical Center,Tokyo,Japan, 3.Department of Palliative Care,Tokyo Metropolitan Tama Medical Center,Tokyo,Japan)

^○Hiroshi Iida^1,2, Kenji Kanoshima², Yumi Inou^2,3, Mizue Matsuura², Akiko Fuyuki², Shiori Uchiyama², Hidenori Okubo², Takuma Higurashi², Hiroki Endo², Takashi Nonaka², Ayumu Goto², Masahiko Inamori³, Kensuke Kubota², Satoru Saito², Atsushi Nakajima² (1.Div. of Medical Education, Sch of Med Yokohama City Univ., Kanagawa, Japan, 2.Dep. of Gastroenterology and Hepatology, Sch of Med Yokohama City Univ., Kanagawa, Japan, 3.Office of Post-graduate Medical Education, Yokohama City Univ Hospital, Kanagawa, Japan)

^○Koji Nakamichi, Taro Abe, Yusuke Higuchi, Yoshihisa Fukuda, Takeshi Ninosaka, Kanae Shinozaki, Yuji Tanigawa, Yuta Masutani, Sinji Okabayashi (Hukuoka Tokusyukai Hospital ,Hukuoka,Japan)