^○Yasuo Miyamoto¹, Ichiro Oda¹, Shigeki Sekine², Shigetaka Yoshinaga¹, Masau Sekiguchi¹, Hiroyuki Takamaru¹, Masayoshi Yamada¹, Genki Mori¹, Seiichiro Abe¹, Satoru Nonaka¹, Haruhisa Suzuki¹, Hirokazu Taniguchi², Yutaka Saito¹ (1.Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan, 2.Div. of Pathology, National Cancer Center Hospital, Tokyo, Japan)

^○Ga Won Song¹, Joo Young Cho², Weon Jin Ko¹, Ki Baik Hahm¹, Pil Won Park¹, Sung Pyo Hong¹, Jun-Hyung Cho², Kwang Hyun Ko¹, Won Hee Kim¹, Junhwan Yoo¹, Duk Hwan Kim¹, Suk Pyo Shin¹ (1.Institute of Gastroenterology, CHA Bundang Medical Center, CHA University, Korea, 2.Digestive Disease Center, Soonchunhyang University Hospital, Seoul, Korea)

^○Hiroki Murai, Takashi Ohta, Kenji Fukumoto, Atsushi Maeda, Naoki Mizutani, Yuta Myojin, Akira Doi, Shouichi Yoshimizu, Rui Mizumoto, Yuki Arimoto, Mayura Toda, Takeshi Nakamura, Ichiyo Itose, Yoshiki Ito, Hideki Hagiwara, Norio Hayashi (Dept. of Gastroenterology, Kansai Rousai Hospital, Hyogo, Japan)

^○Tatsuya Takahashi, Ryuta Takenaka, Noriko Okazaki, Yuki Baba, Hisashi Ishikawa, Daisuke Kawai, Koji Takemoto, Hirofumi Tsugeno, Shigeatsu Fujiki (Dept. of Gastroenterology,Tsuyama Chuo Hospital,Okayama,Japan)

^○Ko Miura¹, Hiroyuki Okada², Tatsuhiro Gotoda¹, Yoshiyasu Kono¹, Hiromitsu Kanzaki¹, Keisuke Hori¹, Masahide Kita¹, Seiji Kawano², Yoshiro Kawahara², Kazuhide Yamamoto¹, Takehiro Tanaka³ (1.Dept. of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan, 2.Department of Endoscopy, Okayama University Hospital, Okayama, Japan, 3.Department of Pathology, Okayama University Hospital, Okayama, Japan)