^○Masaru Miyazato, Hitoshi Mabuchi, Hiroto Shimajiri, Keisuke Yonamine, Hisayoshi Natomi, Yuko Shiroma, Maki Nishizawa, Kunikazu Hoshino, Yuzuru Kinjo, Noriya Nakachi, Ryosaku Tomiyama (Dept. of Gastroenterology,Regional Independent Administrative Corporation Naha City Hospital ,Okinawa,Japan)

^○Yu Ishii, Katsuya Kitamura, Akira Yamamiya, Tomohiro Nomoto, Tadashi Honma, Hitoshi Yoshida (Div. of Gastroenterology, Dept. of Medicine, Showa Univ. Sch. of Med., Tokyo, Japan)

^○Tadahiro Yamasaki, Suguru Mizuno, Rindo Ishii, Yuri Hanaoka, Tsuyoshi Fukumoto, Toru Arano, Daisuke Tagami, Jun Tashiro, Kazuaki Tejima, Jun Miwa, Masahiro Arai (Dept. of Gastroenterology, Toshiba General Hospital, Tokyo, Japan)

^○Sakue Masuda, Kazuya Koizumi, Haruki Uojima, Chikamasa Ichita, Shinnosuke Tokoro, Akiko Sasaki, Takeshi Kinbara, HIdeto Egashira, makoto Kako (Dept. of Gastroenterology. Shonankamakura General Hospital, Japan)

^○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)