^○Toru Horii, Takuya Yokota, Tomohiro Masaka, Tetsuya Miseki (Dept. of Gastroenterology,Obihiro Daiichi Hospital,Obihiro,Japan)

^○Takuya Wada, Satoshi Tanabe, Kenji Ishido, Tohru Sasaki, Mizutomo Azuma, Chikatoshi Katada, Katsuhiko Higuchi, Wasaburo Koizumi (Dept.Of Gastroenterology,Sch. of Med. Kitasato Univ. Kanagawa, Japan)

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

^○Yoko Kitamura, Hideto Shimokoube, Akira Kakutani, Kohei Fukumoto, Koujirou Mori, Saiyu Tanaka, Tomoyuki Ohno, Kazuyuki Kanemasa (Dept. of Gastroenterology and Hepatology, Nara City Hospital, Nara, Japan)

^○Shigeo Banno, Keiichi Morishita, Chiharu Miyakata, Natuki Matuo, Yuuhi Ozaki, akira Kimijima, Shin Saida, Satoshi Kaji, Nobusada Koike, Tuneo Hayashi, Nobuhiko Harada, Mamoru Suzuki (Hachioji Digestive Disease Hospital, Japan)