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

^○Tomohiro Miwata¹, Shiro Oka¹, Kazuaki Chayama² (1.Dept. of Endoscopy , Hiroshima University Hospital, Hiroshima, Japan, 2.Department of Gastroenterology & Metabolism, Hiroshima University Hospital, Hiroshima, JAPAN)

^○Manabu Onimaru¹, Haruhiro Inoue¹, Kazuya Sumi¹, Chiaki Sato¹, Kuniyo Gomi¹, Yohei Kitamura¹, Michitaka Suzuki¹, Shinwa Tanaka¹, Haruo Ikeda¹, Mitsuo Saito¹, Hiroaki Ito¹, Masaaki Matsukawa¹, Fumio Ishida², Shinei Kudo² (1.Digestive Disease Center, Showa Univ. Koto Toyosu Hospital, Japan, 2.Digestive Disease Center, Showa Univ. Northern Yokohama Hospital)

^○Fumito Yanagisawa¹, Yuichiro Yano¹, Yutaro Kubota¹, Toshihiro Kihara¹, Masayuki Tojo¹, Kenichi Konda¹, Kensuke Shinmura¹, Teppei Tagawa¹, Kentaro Iijima¹, toshihiko Gocho¹, Atsushi Katagiri², Kazuo Konishi¹, Fuyuhiko Yamamura¹, Hitoshi Yoshida¹ (1.Div. of Gastroenterology, Dept. of Medicine, Showa Univ. Sch. of Med., Tokyo, Japan, 2.Endoscopic Center, Showa Univ. Hp., Tokyo, Japan)

^○Shinichi Tsuruta, Mitsuru Esaki, Haruei Ogino, Hirotada Akiho (Kitakyushu City Medical Center, Dept. of Gastroenterology, Fukuoka, Japan)

^○Akihiro Miyakawa, Akira Nakamura, Ei Itobayashi, Haruhisa Shimura, Kenji Shimura (Dept. of Gastroenterology, Asahi General Hospital, Chiba, Japan)

^○Kazuya Inoki, Haruhisa Suzuki, Ichiro Oda, Masau Sekiguchi, Genki Mori, Seiichiro Abe, Satoru Nonaka, Shigetaka Yoshinaga, Takeshi Nakajima, Yutaka Saito (Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan)

^○Kohei Ono¹, Yoshimasa Miura¹, Manabu Nagayama¹, Daiki Nemoto¹, Yasushi Miyata¹, Yuji Ino¹, Takahito Takezawa¹, Hiroyuki Sato¹, hirotsugu Sakamoto¹, Hakuei Shinhata¹, Yoshikazu Hayashi¹, Tomonori Yano¹, keijiro Sunada¹, Hiroyuki Osawa¹, Yoshinori Hosoya², Hironori Yamamoto¹ (1.Div. of Gastroenterology , Dept. of Internal Medicine, Sch. of Jichi Medical University ,Tochigi, Japan, 2.Div. of Surgery , Dept. of Surgery , Sch. of Jichi Medical University ,Tochigi, Japan)

^○Akinori Shimayoshi¹, Shinjiro Yamaguchi¹, Saki Kitano¹, Eiji Kimura¹, Fumihiko Sano¹, Eri Yoshida¹, Ryotaro Uema¹, Katsuhiko Sato¹, Aiko Himeno¹, Eri Tsumano¹, Mai Horie¹, taro Oshima¹, Maiko Murata¹, Masanori Miyazaki¹, Satoshi Egawa¹, Hideki Miyatake¹, Toru Masuzawa², Kentaro Kishi², Hiroki Akamatsu², Masahiko Tsujimoto³, Masahide Oshita¹ (1.Dept. of Gastroenterology and Hepatology,Osaka Police Hospital. Osaka, Japan, 2.Dept of Surgery, Osaka Police Hospital. Osaka, Japan, 3.Dept of Clinical Pathology, Osaka Police Hospital. Osaka, Japan)

^○Hirohisa Takeuchi¹, Nobutsugu Abe¹, atsuko oki¹, Kazuhiko Hirano², Yasuo Okura², Masanori Sugiyama¹ (1.Dept. of Surgery, Sch. of Med. Kyorin Univ., Tokyo, Japan, 2.Dept. of Pathology, Sch. of Med. Kyorin Univ., Tokyo, Japan)