^○Tomoyuki Minami, Tamito Sasaki, Masahiro Serikawa, Takashi Ishigaki, Yasutaka Ishii, Teruo Mouri, Satoshi Yoshimi, Akinori Shimizu, Tomofumi Tsuboi, Keisuke Kurihara, Yumiko Tatsukawa, Eisuke Miyaki, Kazuaki Chayama (Dept. of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan)

^○Masanari Sekine, Wataru Sato, Hirohide Ohnishi (Div. of Gastroenterology, Sch. of Med. Akita Univ., Akita Japan)

^○Takashi Tamura, Kazuki Ueda, Yuuki Kawazi, Hiroko Abe, Junya Nuta, Masahiro Itonaga, Yasunobu Yamashita, Takao Maekita, mikitaka iguchi, Hideyuki Tamai, jun kato, Masao Ichinose (Second Dept. of Internal Medicine, Wakayama Medical University, Japan)

^○Masatoshi Mabuchi, Shinpei Doi, Ichiro Yasuda, Kotaro Matsumoto, Hanae Yamada, Hiromichi Tsunashima, Noritaka Ozawa, Yusuke Kajiyama, Kentaro Kikuchi (Dept. of Gastroenterology, Teikyo University Mizonokuchi Hospital, Kawasaki City, Japan)