^○Kentaro Inoue¹, Kouichi Aiura², Soujun Hoshimoto², Masaya Shito², Ken Ariizumi¹, Hanae Takagi¹, Hironao Tamai¹ (1.Dept. of Internal Medicine, Kawasaki Municipal Hospital, Kawasaki, Kanagawa, Japan, 2.Dept. of Surgery, Kawasaki Municipal Hospital, Kawasaki, Kanagawa, Japan)

^○Katsuhisa Inamura, Tatsuo Kumai, Yoshiko Takata, Toshiyuki Okamura, Hiroshi Kawai (Dept. of Gastroenterology, Tonami General Hospital, Tonami, Japan)

^○Taketo Matsunaga, Shunichi Takahata, Kenjiro Date, Takaaki Fujimoto, Hideyo Kimura, Koji Tamura, Yoshihiro Miyasaka, Daisuke Yamada, Takao Ohtsuka, Masao Tanaka (Dept. of Surgery and Oncology, Kyushu Univ., Fukuoka, Japan)

^○Osamu Nakashima, Minoru Murayama, Katsuo Yamazaki, Kazuo Koizumi (Dept.Of Surgery Izumi Memorial Hospital,Tokyo,Japan)

^○Tomoya Iida¹, Hiroyuki Kaneto¹, Kohei Wagatsuma¹, Motohiro Tani¹, Motoki Sasaki¹, Yumiko Naganawa¹, Kayo Murakami¹, Shuji Sato¹, Haruo Shimizu¹, Yasuhisa Shinomura² (1.Dept. of Gastroenterology, Muroran City General Hospital, Muroran, Japan, 2.Dept. of Gastroenterology, Rheumatology, and Clinical Immunology)