^○Hideki Mizuno, Keiji Minouchi, Shou Aoyama, Yoshinobu Hinoue (Dept. of Gastroenterology, Toyama City Hospital, Toyama, Japan)

^○Ryuichi Yamamoto¹, Ko Nishikawa², Tetsuro Fujita¹, Takeshi Otsuka¹, Masatomo Takahashi¹, Katsuya Chinen¹, Yasuyo Osafune¹, Shingo Kato¹, Sumiko Nagoshi¹, Koji Yakabi¹ (1.Dept. of Gastroenterology and Hepatology,Saitama Medical Center,Saitama Medical University, Saitama,Japan, 2.Ageo Central General Hospital, Department of Gastroenterology)

^○Akira Saeki¹, Rikako Kinoshita¹, Yuki Kugiyama¹, Ryu Sasaki¹, Shigemune Bekki¹, Satoru Hashimoto¹, Shinjirou Uchida¹, Shinya Nagaoka², Seigou Abiru¹, Kazumi Yamasaki², Atsumasa Komori², Hiroshi Yatsuhashi² (1.Dept. of Hepatology, Nho Nagasaki Medical Center, Nagasaki, Japan, 2.Clinical Research Center, NHO Nagasaki Medical Center, Nagasaki, Japan)

^○Takuma Yamashita, Hideki Kamada, Kiyoyuki Kobayashi, Takayuki Fujimori, Kiyohito Kato, Tsutomu Masaki (Dept. of Gastroenterology & Neurology, Faculty of Medicine, Kagawa Univ., Kagawa, Japan)

^○Tetsuro Yoshimura^1,2, shougo kawaguchi^1,2, yasumitsu araki^1,2, kouji kikuchi¹, toyohito wada¹, Shinsaku Fukuda² (1.Dept. of Gastroenterology, Aomori City Hospital, Japan, 2.Dep. of gastroenterology Sch. of Med. Univ., Hirosaki, Japan)