^○Hhideaki Nakamura, Takasi Meguro, Takurou Matida, Yosiki Hujisawa, Takasi Katou, Kiyotaka Sasaki, Hirohito Yamada, Hidetosi Kagaya, Syouiti Horita (Dept. of Internal Medicine, Hokkaidou Gastroenteroiogy Hospital, Sapporo, Japan)

^○Tomonori Ida, Daisuke Kurihara, Takuma Suto, Keiichi Ashikari, Naoya Kawano, Shihoko Seki, Shinshuke Tsuruta, Hiroaki Takahashi, Hideyuki Chiba, Taiki Morohashi, Toru Goto (Dept. of Gastroenterology, Omori Red Cross Hospital, Tokyo, Japan)

^○Yohei Takeda, Yukako Matsuki, Hiroki Kurumi, Akeri Mitsuda, Hisao Tanaka (Dept. of Internal Medicine, Japanese Red Cross Tottori Hospital, Tottori, Japan)

^○Kazuhisa Okamoto¹, Osamu Matsunari², Kazuhiro Mizukami¹, Tadayoshi Okimoto¹, Kazunari Murakami¹ (1.Dept. of Gastrointestinal Medicine, Sch. of Med. Oita Univ., Yufu, Oita Prefecture, Japan, 2.Usatakada Medical Association Hospital, Usa, Oita prefecture, Japan.)

^○Seiji Kaino, Shuhei Shinoda, MICHITAKA KAWANO, Hirofumi Harima, Shigeyuki Suenaga, Isao Sakaida (Dep. of Gastroenterology and Hepatology, Yamaguchi Univ. Graduate School of Medicine, Japan)