^○Masahiko Tsujii¹, Motohiko Kato², Yoshito Hayashi¹, Tsutomu Nishida³, Shinichiro Shinzaki¹, Tetsuji Fujinaga¹, Akira Maekawa¹, Takuya Yamada⁴, Kengo Nagai¹, Shunsuke Yoshii¹, Yoshiki Tsujii¹, Takuya Inoue¹, Hideki Iijima¹, Tetsuo Takehara¹ (1.Dept. of Gastroenterology and Hepatology, Graduate School of Medicine, Osaka Univ., Osaka, Japan, 2.TOKYO MEDICAL CENTER,Tokyo,Japan, 3.Toyonaka Municipal Hospital, Osaka, Japan, 4.National Hospital Organization Osaka National Hospital,Osaka,Japan)

^○Michiyo Kodama¹, Kousaku Hata¹, Daisuke Kamino¹, Shinichirou Sugiyama¹, Tatsurou Tanimoto¹, Shinsuke Kira¹, Hirofumi Kobayashi¹, Eiko Sanuki¹, Kouji Sumii¹, Kaori Takeuchi² (1.Dept. of Medical Gastroenterology, Saiseikai Hiroshima Hospital, Hiroshima, Japan)

^○Kazuyoshi Nagayama¹, Shin-ya Sakita², Akihiko Ariimura¹ (1.Div. of Gastroenterology, Yokohama City Minato Red Cross Hospital, Yokohama, Japan, 2.Div. of Hepatology, Yokohama City Minato Red Cross Hospital, Yokohama, Japan)

^○Katsuhiko Mitsuzaki, Kumi Fukunaga (Center For Preventive Medicine, Saiseikai Kumamoto Hospital, Kumamoto, Japan)