^○Naoyuki Yamaguchi^1,2, Hajime Isomoto^1,2, Kayoko Matsushima², Hitomi Minami², Yuko Akazawa², Hitoshi Nishiyama², Ken Onita², Fuminao Takeshima², Saburo Shikuwa², Kazuhiko Nakao^1,2 (1.Dept. of Endoscopy,Nagasaki University Hospital,Nagasaki,Japan, 2.Department of Gastroenterology and Hepatology, Nagasaki University Hospital,Nagasaki,Japan)

^○Junko Fujiwara¹, Kumiko Monma¹, Yoko Tateishi² (1.Tokyo Metropolitan Komagome Hospital,Dapartment of Endoscopy,Tokyo,Japan, 2.Tokyo Metropolitan Komagome Hospital,Dapartment of Pathology,Tokyo,Japan)

^○Kyosuke Tanaka¹, Yasuhiko Hamada¹, Shunsuke Tano¹, Tetsuro Harada^1,2, Takashi Kitade¹, Takashi Sakuno², Kenichiro Nishikawa², Reiko Yamada², Hiroyuki Inoue², Masaki Katsurahara¹, Noriyuki Horiki¹, Yoshiyuki Takei² (1.Dept. of Endoscopy, Mie University Hospital, Tsu, Japan, 2.Dept. of Gastroenterology and Hepatology, Mie Univ., Tsu, Japan)

^○Tomoko Kitaichi¹, Atsushi Majima¹, Yuriko Onozawa¹, Yusuke Horii¹, Kentaro Suzuki¹, Osamu Dohi¹, Kazuhiro Kamada², Yuji Naito¹, Yasuko Fujita², Mitsuo Kishimoto², Akio Yanagisawa² (1.Div. Gastroenterology and Hepatology, Sch of Med. Kyoto Prefectural Univ., Kyoto, Japan., 2.Div. of Pathology, Sch of Med. Kyoto Prefectural Univ., Kyoto, Japan.)

^○Masakazu Kikuchi¹, Ryoji Miyahara¹, Kohei Funasaka², Kazuhiro Furukawa¹, Ippei Matsuzaki¹, Takafumi Yokoyama¹, Hiromitsu Asai¹, Tomohiko Obayashi¹, Kenichi Kobayashi¹, Takeshi Yamamura¹, Eizaburo Ohno², Masanao Nakamura¹, Hiroki Kawashima¹, Yoshiki Hirooka², Osamu Watanabe¹, Takafumi Ando¹, Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Japan, 2.Department of Endoscopy, Nagoya University Hospital)