^○Itaru Naitou¹, Takahiro Nakazawa¹, Hirotaka Ohara² (1.Dept. of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan, 2.Department of Community-based Medical Education, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan)

^○Masaki Miyazawa, Takashi Kagaya, Shuichi Kaneko (Dept. of Gastroenterology, Kanazawa Univ., Ishikawa, Japan)

^○Kensuke Kubota, Kunihiro Hosono, Yuji Fujita (Div. of Hepatogastroenterology, Japan)

^○Makoto Takaoka, Tsukasa Ikeura, Kazuichi Okazaki (Third Dept. of Internal Medicine, Kansai Med. Univ., Osaka, Japan)

^○Takayoshi Tsuchiya¹, Takao Itoi¹, Terumi Kamisawa² (1.Dept. of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo, Japan, 2.Department of Gastroenterology, Tokyo Metropolitan Center and Infectious Disease Center Komagome Hospital, Tokyo, Japan)

^○Yasutaka Ishii, Tamito Sasaki, Kazuaki Chayama (Dept. of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan)

^○Tetsuya Ito¹, Takashi Muraki¹, Takeshi Uehara² (1.Dept. of Gastroenterology, Shinshu University Hospital, Matsumoto, Japan, 2.Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan)

^○Kenji Hirano^1,2, Hiroyuki Isayama², Kazuhiko Koike² (1.Dept. of Gastroenterology, Tokyo Takanawa Hospital, Tokyo, Japan, 2.Department of Gastroenterology, Graduate School of Medicin, The University of Tokyo, Tokyo, Japan)

^○Kazuro Chiba, Terumi Kamisawa, Sawako Kuruma (Dept. of Internal Medicine, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital , Japan)

^○Shunsuke Omoto, Masayuki Kitano, Masatoshi Kudo (Dept. of Gastroenterology and Hepatology, Kinki University Fuculy of Med, Osaka, Japan)

^○Takamichi Kuwahara¹, Yoshiki Hirooka², Hidemi Goto^1,2 (1.Dept. of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine , Nagoya , Japan, 2.Department of Endscopy, Nagoya University Hospital , Nagoya , Japan)

^○Tomohiro Iwai, Hiroyuki Matsubayashi, Hiroyuki Ono (Div. of Endoscopy, Shizuoka Cancer Center Hospital, Shizuoka, Japan)

^○Atsushi Kanno, Atsushi Masamune, Toru Shimosegawa (Div. of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan)

^○Mitsuru Okuno¹, Takuji Iwashita¹, Ichiro Yasuda² (1.First Dept. of Internal Medicine, Gifu University Hospital, Gifu, Japan, 2.Gastroenterology, Teikyo University School of medicine University Hospital, Mizonokuchi, Tokyo, Japan)

^○Daisuke Masuda, Takeshi Ogura, Kazuhide Higuchi (The Second Dept. of Internal Medicine, Osaka Medical College, Osaka, Japan)

^○Hideyuki Shiomi, Yasuhiro Okabe, Hiromu Kutsumi (Div. of Gastroenterology, Dept. of Internal Medicine, Graduate Sch. of Med. Kobe Univ., Hyogo, Japan)