^○Masanobu Yukutake¹, Kenichi Kuwahara¹, Kei Senoo¹, Hidenori Tanaka¹, Karin Hayashi¹, Naoki Yorita¹, Yuhei Saito¹, Akira Fukumoto¹, Shunsuke Takata², Koji Waki¹, Hiroyuki Ueda², Shigeru Kimura¹, Shinji Nagata², Keiji Tsuji¹ (1.Dept. of Gastroenterology, Hiroshima City Asa Hospital, Hiroshima, Japan, 2.Department of Endoscopy, Hiroshima City Asa Hospital, Hiroshima, Japan)

^○Masao Toki, Isamu Kurata, Hirotaka Ota, Kazunari Ochiai, Koichi Gondo, Kensuke Arai, Shunsuke Watanabe, Yoko Jimbo, Akiko Ohno, Hideyuki Hata, Tomohiko Hasue, kenji Nakamura, Yasuharu Yamaguchi, Katsuo Morozumi, Shinichi Takahashi (The Third Dept. of Internal Medicine, Kyorin University School of Medicine,Tokyo,Japan)

^○Tomohiro Ishii¹, Kazuya Sugimori¹, Takashi Kaneko¹, Atsuyoshi Kubo¹, Yuniba Ishii¹, Atsushi Kokawa¹, kazushi numata¹, Katsuaki Tanaka¹, Haruo Miwa², Eri Kameta², Shin Maeda² (1.Dept. of Gastroenterology, Yokohama City University Medical Center, Yokohama, Japan, 2.Dept. of Gastroenterology, Yokohama city University Hospital)

^○Yohei Kawashima, Yoshiaki Kawaguchi, Aya Kawanishi, Atsuko Maruno, Masami Ogawa, Tetsuya Mine (Dept. of Gastroenterology, Sch. of Med. Tokai Univ., Kanagawa, Japan)

^○Tatsuya Ishii, Maiko Ikenouchi, Soichiro Umemura, Yuki Hayashi, Tomoki Nakai, tomonori masuda, Shunjiro Azuma, Satoshi Ogawa, mio taki, Hisakazu Matsumoto, Yohei Yabuuchi, Hiroyoshi Iwagami, Sakiko Ota, Kosuke Minaga, Yasuki Nakatani, Keiichi Hatamaru, Takuji Akamatsu, Takeshi Seta, Shunji Urai, Yoshito Uenoyama, Yukitaka Yamashita (Gastroenterology and Hepatology of Japanese Red Cross Wakayama Medical Center, Wakayama, Japan)