^○Kazuhiro Ishigaki¹, Hiroyuki Isayama¹, Natsuyo Yamamoto¹, Tsuyoshi Hamada¹, Tsuyoshi Takeda¹, Ryunosuke Hakuta¹, Dai Akiyama¹, Kaoru Takagi¹, Naminatsu Takahara¹, Takahiro Kishikawa¹, Ryota Takahashi¹, Koji Miyabayashi¹, Dai Mouri¹, Hirofumi Kogure¹, Saburo Matsubara², Yukiko Ito³, Yousuke Nakai¹, Minoru Tada¹, Kazuhiko Koike¹ (1.Dept. of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan, 2.Department of Gastroenterology, Tokyo Metropolitan Police Hospital, Tokyo, Japan, 3.Department of Gastroenterology, Japanese Red Cross Medical Center, Tokyo, Japan)

^○Tsuyoshi Hamada¹, Hiroyuki Isayama¹, Yousuke Nakai¹, Gyotane Umefune², Dai Akiyama¹, Kaoru Takagi¹, Naminatsu Takahara¹, Dai Mouri¹, Hirofumi Kogure¹, Osamu Togawa¹, Saburo Matsubara¹, Yukiko Ito², Natsuyo Yamamoto¹, Minoru Tada¹, Kazuhiko Koike¹ (1.Dept. of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan, 2.Department of Gastroenterology, Japanese Red Cross Medical Center, Tokyo, Japan)

^○Kazunori Nakaoka, Takamitsu Kurashita, Tomoki Takamura, Yuka Takagawa, Masashi Ohki, Toshiki Kan, Hiroaki Shimazaki, Takuji Nakano, Michihito Murao, Naoto Kawabe, Senju Hashimoto, Kentaro Yoshioka (1Dept. of Liver, Biliary Tract and Pancreas Diseases, Fujita Health University, Aichi, Japan)

^○Keizo Kato, Yoshiyuki Sato, Takeshi Yonezawa, Noriko Hanawa, Makiko Ika, Shouhei Shimizu (Dept. of Gastroenterology and Hepatology, Shinmatsudo Central General Hospital, Chiba, Japan)

^○Takaaki Matsumoto, Mitsuhiro Kida, Kosuke Okuwaki, Yusuke Kawaguchi, Eiji Miyata, Rikiya Hasegawa, Takahito Mishima, Toru Kaneko, Shuko Tokunaga, Hiroshi Yamauchi, Shiro Miyazawa, Tomohisa Iwai, Miyoko Takezawa, Hiroshi Imaizumi, Wasaburo Koizumi (Dept. of Gastroenterology, Kitasato University School of Medicine, Kanagawa, Japan)

^○Satoshi Kawakami, Mitsuharu Fukasawa, Sumio Hirose, Yudai Yokota, Ei Takahashi, Hiroko Shindo, Makoto Kadokura, Shinichi Takano, Tadashi Sato, Nobuyuki Enomoto (First Dept. of Medicine Yamanashi,Japan)