^○shozan tobisawa, akinobu koiwai, chieko ogawa, Shigeyuki Kobayashi, satoshi yokosawa, noriatu kanno (Iwate Prefectural Iwai Hospital, Iwate, Japan)

^○Shigeo Endou, Hiroshi Fujita, Mitumasa Koike, Tenzou Shiraisi (Dept. of Gastroenterology, Nissin Orido Hospital, Aichi, Japan.)

^○Wataru Fukuda¹, Koichi Uejima¹, Chihiro Yokomizo¹, Takahiro Mori¹, Hideo Tomioka¹, Tadashi Ito¹, Shigeto Mizuno², Seiji Shimizu¹ (1.Osaka General Hospital of West Japan Railway Company, 2.Kobe Pharmaceutical University Medical Pharmaceutics)

^○Ryohei Kishino¹, Eisuke Iwasaki², Mamika Ohara¹, Yoshihiko Abe¹, Mai Hoshino¹, Shinta Mizuno¹, Gen Sakai¹, Motoko Izumiya¹, Shinsuke Hunakoshi¹, Atsushi Nakazawa¹, Nobuhiro Tsukada¹ (1.Tokyoto Saiseikai Central Hospital, Dept. of Internal Medicine, Tokyo, Japan, 2.Keio University Hospital Dept Gastroenterology Tokyo Japan)

^○hiroki tanabe¹, Katsuyoshi Ando¹, Kiichi Sato¹, Eiichiro Ichiishi¹, Takumi Uwagawa², Nobuhiro Tsusui³, Akira Yanagisawa², Yutaka Suzuki², Yoshiki Nomura³, mikihiro fujiya³, Yutaka Kohgo³ (1.Div. of Gastroenterology, International University of Health and Welfare Hospital, Japan, 2.Dept.of Surgery, International University of Health and Welfare Hospital, 3.Div. of Gastroenterology and Heamatology Oncology, Dept. of Internal Medicine, Asahikawa Medical University)