^○Hiroaki Matsui, Yuri Kato, Maiko Ogawa, Yukiko Inagaki, Izumi Tsuchiya, Kanji Okuma, Emiko Tanida, Yoshifumi Masui, Kai Yoshizawa, Motoyoshi Izumi, Akira Kanesaki (Machida Municipal Hospital, Japan)

^○Takahisa Suzuki, Masataka Shinoda, Hitomi Takashi, Nobuyuki Miyake, Mutsumi Murayama, Tomohiro Soda, Kentaro Yamada (Div. of Gastroenterology, Toyota Memorial Hospital., Aichi, Japan)

^○Masaaki Yamada^1,2, Kazuki Yamada¹, Syuji Nanbu¹, Toshihiko Ojima³, Hideaki Neduka³, Mitsukazu Saitou³, Hiroshi Mihara⁴, Haruka Fujinami⁴, Jun Nishikawa⁴, Toshirou Sugiyama⁴ (1.Dep, of Internal Medicine. Yatsuo General Hospital, Toyama, Japan, 2.Dep. of Epidemiology and Health Policy, University of Toyama, Japan., 3.Dep, of Surgery. Yatsuo General Hospital, Toyama, Japan, 4.Dep. of Gastroenterology and Hepatology, University of Toyama, Toyama, Japan.)

^○Megumi Hayakawa, Hiroyuki Yoriki, Kanetoshi Suwa, Noriko Tanaka, Keika Zen, Masayasu Jo, Ryusuke Takada, Akira Masuzawa, Naoyuki Matsumoto, Shiro Takami, Naoki Wakabayashi, Keisho Kataoka (Hepatology and Gastroenterology, Otsu Municipal Hospital, Shiga, Japan)

^○Hiroki Hayashi¹, Hidetoshi Aoki², Kenichi Kitazoe², Satoshi Teramae², Ushio Tamura², Kanako Otsuka², Koji Takahashi², Toshihiro Omoya², Yasuhiro Suzuki², Jiro Nakamoto², Hiroshi Shibata², Mitsuyasu Yano², Nobuo Satake³, Eiji Kudou³ (1.Tokushima Prefectural Central Hospital, Center For Medical Education, Tokushima, Japan, 2.Tokushima Prefectural Central Hospital, Dept. of Gastroenterology, Tokushima, Japan, 3.Tokushima Prefectural Central Hospital, Dept. of Diagnostic Pathology, Tokushima, Japan)