^○Hideo Yanai¹, Daisuke Chihara², Eiki Sakaguchi², Megumi Harano², Tatsunori Chubachi², Tomoyuki Murakami³ (1.Dept. of Clinical Research, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan, 2.Dept. of Gastroenterology & Hepatology, National hospital Organization Kanmon Medical Center, Shimonoseki, Japan, 3.Dept. of Pathology, National hospital Organization Kanmon Medical Center, Shimonoseki, Japan)

^○Ga Won Song¹, Weon Jin Ko¹, Joo Young Cho¹, Ki Baik Hahm¹, Pil Won Park¹, Sung Pyo Hong¹, Kwang Hyun Ko¹, Won Hee Kim¹, Junhwan Yoo¹, Duk Hwan Kim¹, Suk Pyo Shin¹, Jun-Hyung Cho² (1.Institute of Gastroenterology, CHA Bundang Medical Center, CHA University, Korea, 2.Digestive Disease Center, Soonchunhyang University Hospital, Seoul, Korea)

^○Chikako Tokoro, Yoshihiro Kaneta, Katsuyuki Sanga, Kimihiro Hayashi, Arisa Serizawa, Junji Hattori, Eiji Yamada, Seitaro Watanabe, Rika Kyo, Satoshi Hishiki, Ichiro Kawana (Dept. of Gastroenterology, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan)

^○Kenji Takashima, Tomonori Yano, Tomoyuki Odagaki, Kensuke Shinmura, Masaomi Imajyou, Tomohiro Kadota, Tomoji Kato, Shozo Osera, Hiroyuki Morimoto, Yusuke Yoda, Yasunori Oono, Hiroaki Ikematsu, KAZUHIRO KANEKO (Dept. of Gastroenterology & Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan)

^○Yoshikazu Hashimoto, Nobutsugu Abe, eri yoshimoto, Nobuyosi Asou, Youhei Kojima, atsuko oki, Hirohisa Takeuchi, Gen Nagao, Yutaka Suzuki, Hiroyoshi Matsuoka, Tadahiko Masaki, Toshiyuki Mori, Masanori Sugiyama (Dept. of Surgery, Sch. of Med. Kyorin Univ., Tokyo, Japan)