^○Masayuki Ohta¹, Yuichi Endo¹, Takahide Kawasaki¹, Kiminori Watanabe¹, Hiroomi Takayama¹, Hiroki Uchida¹, Kazuhiro Yada¹, Yukio Iwashita¹, Masafumi Inomata¹, Seigo Kitano² (1.Dept. of Gastroenterol. and Pediatric Surg., Oita Univ. Faculty of Med., Japan, 2.Oita Univ.)

^○Hisashi Fujiwara, Yasuaki Nakajima, Kenro Kawada, Yutaka Tokairin, Takuya Okada, Yutaka Miyawaki, Tairo Ryotokuji, naoto fujiwara, Katsumasa Saito, Rei Chou, Taichi Ogo, Masafumi Okuda, Yutaka Nakajima, Yuichiro Kume, Toshihiro Matsui, Youichi Kumagai, Kagami Nagai, Tatsuyuki Kawano (Dept. of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan)

^○Kenichi Kobayashi¹, Ryoji Miyahara¹, Kohei Funasaka², Kazuhiro Furukawa², Ippei Matsuzaki¹, Takafumi Yokoyama¹, Masakazu Kikuchi¹, Tomohiko Obayashi¹, Hiromitsu Asai¹, Takeshi Yamamura², Eizaburo Ohno¹, 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,Nagoya,Japan, 2.Department of Endoscopy, Nagoya University Hospital,Nagoya,Japan)

^○Masashi Takemura, Mamiko Takii, Kayo Yoshida, Nobuaki Kaibe, Hirotaka Niwa, Tsutomu Oshima, Shojirou Kikuchi, Mitsuru Sasako (Dept. of Upper Gastrointestinal Surgey, Hyogo College of Medicine, Japan)

^○Toshihisa Fujiyoshi^1,2, Kazuo Hara¹, Makoto Ishihara², Tsutomu Tanaka², Masahiro Tajika², Hiroshi Imaoka¹, Susumu Hijioka¹, Nobumasa Mizuno¹, Nozomi Okuno¹, Nobuhiro Hieda¹, Tsukasa Yoshida¹, Takamitsu Sato¹, Eiji Tsutsumi¹, Tatsuji Yogi¹, Kenji Yamao¹, Yasumasa Niwa² (1.Dept. of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Japan, 2.Dept. of Endoscopy, Aichi Cancer Center Hospital, Nagoya, Japan)