^○Masato Taki, Jiro Watari, Kumiko Nakamura, Yoshitaka Kitayama, Hiroo Sei, Maki Kawanaka, Akio Tamura, Takahisa Yamasaki, Tomoaki Kono, Takashi Kondo, Fumihiko Toyoshima, Katsuyuki Tozawa, Hisatomo Ikehara, Yoshio Ouda, Toshihiko Tomita, Tadayuki Oshima, Hirokazu Fukui, Hiroto Miwa (Hyogo College of Medicine,Hyogo,Japan)

^○Tomoaki Tashima¹, Ken Ohata¹, Maiko Takita¹, Yasushi Matsuyama¹, Yohei Minato¹, Kouichi Nonaka¹, Shinichi Ban², Nobuyuki Matsuhashi¹ (1.Kanto Medical Center NTT E.C,Dept. of Gastroenterology, Tokyo, Japan, 2.Saiseikai Kawaguchi General Hospital, Diagnostic Pathology, Tokyo, Japan)

^○Munetaka Nakamura¹, Jun Nishikawa¹, Koichi Hamabe², Atsushi Goto³, Junichi Nishimura¹, Hiroaki Shibata¹, Misato Nagao¹, Sho Sasaki¹, Shinichi Hashimoto¹, Takeshi Okamoto¹, Isao Sakaida¹ (1.Dep. of Gastroenterology & Hepatology, Yamaguchi University Graduate Sch. of Med., Yamaguchi, Japan, 2.Ube Industries, Ltd Central Hospital, Yamaguchi, Japan, 3.Hagi Civil Hospital, Yamaguchi, Japan)

^○Ken Onita, Hajime Isomoto, Takemasa Senoo, Hiroyuki Ishii, Kayoko Matsushima, Hitomi Minami, Yuko Akazawa, Naoyuki Yamaguchi, Fuminao Takeshima, Kazuhiko Nakao (Dept. of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan)