^○Takafumi Yuki¹, Yasumasa Tada², Akihiko Oka², Nobuhiko Fukuba², Tsuyoshi Mishiro², Naoki Oshima², Kousaku Kawashima², Norihisa Ishimura², Shuichi Sato¹, Shunji Ishihara², Yoshikazu Kinoshita² (1.Gastrointestinal Endoscopy, Shimane University Hospital, Izumo, Japan, 2.Internal Medicine II, Shimane University Faculty of Medicine, Izumo, Japan)

^○Sho Sasaki¹, Jun Nishikawa¹, Misato Nagao¹, Munetaka Nakamura¹, Junichi Nishimura¹, Shinichi Hashimoto¹, Takeshi Okamoto¹, Isao Sakaida¹, Hideo Yanai² (1.Dept. of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan, 2.Dept. of Clinical Research:Gastroenterology and Hepatology, National Hospital Organization Kanmon Medical Center, Yamaguchi, Japan)

^○Yoichiro Iboshi¹, Yoshitaka Hata¹, Naohiko Harada¹, Seiichiro Sakisaka¹, Mio Kawamoto¹, Tomoyuki Kurashige¹, Fusako Kojima¹, Masafumi Wada¹, Hiroyuki Fujii¹, Nobito Higuchi¹, Nao Fujimori¹, Yorinobu Sumida¹, Motoyuki Koujima¹, Tsuyoshi Yoshimoto¹, Ken Kawabe¹, Kunitaka Fukuizumi¹, Makoto Nakamuta¹, Kazuhiko Nakamura² (1.Dept. of Gastroenterology, Clinical Research Center, Kyushu Medical Center, Fukuoka, Japan, 2.Dept. of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu Univ., Fukuoka, Japan)

^○Hideaki Miyamoto¹, Yasushi Oda², Rei Narita^1,2, Shunpei Hashigo^1,2, Shinichiro Oyama¹, Takashi Shono¹, Hideaki Naoe¹, Yutaka Sasaki¹ (1.Dept. of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan, 2.Oda GI Endoscopy and Gastroenterology Clinic, Kumamoto, Japan)