^○Ippei Matsuzaki¹, Ryoji Miyahara¹, Kohei Funasaka², Kazuhiro Furukawa¹, Takafumi Yokoyama¹, Masakazu Kikuchi¹, Tomohiko Obayashi¹, Hiromitsu Asai¹, Kenichi Kobayashi¹, Takeshi Yamamura², Eizaburo Ohno¹, Masanao Nakamura¹, Hiroki Kawashima¹, Yoshiki Hirooka², Osamu Watanabe¹, Osamu Maeda¹, Takafumi Ando¹, Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan, 2.Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan)

^○Tomohiro Kadota¹, Yasunori Oono¹, Masaomi Imajyou¹, Tomoji Kato¹, Hiroyuki Morimoto¹, Shozo Osera¹, Yusuke Yoda¹, Tomoyuki Odagaki¹, Hiroaki Ikematsu¹, Tomonori Yano¹, Takeshi Kuwata², KAZUHIRO KANEKO¹ (1.Dept. of Gastroenterology, Endoscopy Division, National Cancer Center Hospital East, Kashiwa, Japan, 2.Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Japan)

^○Aya Murakawa¹, Jun Tashiro¹, Jun Miwa¹, Daisuke Tagami¹, Toru Arano¹, Suguru Mizuno¹, Kazuaki Tejima¹, Yasuko Hirabayashi², Masahiro Arai¹ (1.Toshiba General Hospital,Dept. of Gastrology, Tokyo, Japan, 2.Toshiba general hospital,Department of pathology, Tokyo, Japan)

^○Keiko Yamamoto¹, Kana Yamanashi¹, Kana Mastuda¹, Keidai Horimoto¹, Hiroaki Yamato¹, Kazuteru Hatanaka¹, Yoshiya Yamamoto¹, Hirohito Naruse¹, Kazuhiro Kudou², Norihiko Shimoyama² (1.Dept. of Gastroenterology Hakodate Municipal Hospital, Japan, 2.Department of Pathology Hakodate Municipal Hospital)

^○Yoshinobu Yamamoto¹, Hogara Nishisaki², Hiroaki Sawai¹, Aya Sakai¹, Takuya Mimura¹, Saeko Kushida¹, Hidetaka Tsumura¹, Takeshi Sakamoto¹, Kazutoshi Tobimatsu¹, Ikuya Miki¹, Masahiro Tsuda¹, Hideto Inokuchi¹ (1.Dept. of Gastroenterology, Hyogo Cancer Center, Hyogo, Japan, 2.Dept. of internal medicine, Kaibara Hospital, Hyogo, Japan)

^○Yoko Jimbo¹, Masao Toki¹, Kazunari Ochiai¹, Hirotaka Ota¹, Kensuke Arai¹, Shunsuke Watanabe¹, Akiko Ohno¹, Isamu Kurata¹, Hideyuki Hata¹, Tomohiko Hasue¹, Kazuhiko Hirano², kenji Nakamura¹, Yasuharu Yamaguchi¹, Katsuo Morozumi¹, Yasuo Okura², Shinichi Takahashi¹ (1.The Third Dept. of Internal Medicine, Kyorin University School of Medicine., Tokyo, Japan, 2.Department of Pathology, Kyorin University School of Medicine., Tokyo, Japan)