^○Takeshi Uehara, Satohiro Matsumoto, Rumiko Kobayashi, Takehiro Ishii, Haruka Otake, Yuji Shindo, Harumi Kawamura, Yuzo Otaki, Shunsuke Urayoshi, Kenichi Yamanaka, Masatoshi Ikeda, Shinya Ushimaru, Takeharu Asano, Takaaki Iwaki, Masanori Fukunishi, Noriyoshi Sagihara, Shinichi Asabe, Hiroyuki Miyatani, Yukio Yoshida (Jichi Medical Univ, Saitama Japan)

^○Yuka Obayashi¹, Reiji Higashi¹, Masaki Kunihiro¹, Yuki Okamoto¹, Kentaro Furumoto¹, Yuji Fukada¹, Toru Yamabe¹, Emiko Kumon¹, Takuki Sakaguchi¹, Koki Nakamura¹, Yuki Fujii¹, Tsuneyoshi Ogawa¹, Ken Hirao¹, Motowo Mizuno¹, Masahiro Nakagawa² (1.Hiroshima City Hiroshima Citizens Hospital,Dept. of Internal Medicine ,Hiroshima,Japan, 2.Hiroshima City Hiroshima Citizens Hospital,Department of Endoscopy,Hiroshima,Japan)

^○Makiko Urabe, Takahiro Amano, Aisa Sakamoto, Uriko Otake, wataru Takagi, Hirotsugu Saiki, Hisashi Kondo, Kei Takahashi, Tokuhiro Matsubara, Masashi Yamamoto, Shiro Hayashi, Sachiko Nakajima, Tsutomu Nishida, Koji Fukui, Masami Inada (Dept. of Gastroenterology, Toyonaka Municipal Hospital, Japan)

^○takeyuki shimoyama¹, Katsuya Endo¹, Masatake Kuroha¹, tomoya kimura¹, hisashi shiga¹, Yoichi Kakuta¹, Yoshitaka Kinouchi², Toru Shimosegawa¹ (1.Dept.Of Gastroenterology,Sch.Of Med.Tohoku Univ.,Sendai,Japan, 2.Student Health Care Center,Tohoku Univ.,Sendai,Japan)

^○Michiko Sato, Motohiko Kato, Masayuki Suzuki, Keiichiro Abe, Hiroaki Takada, Tetsu Hirata, Yusaku Takatori, Tomoyasu Naruse, Kaoru Takabayashi, Masahiro Kikuchi, Yoichi Fujiyama, Masahiko Takahashi, Toshio Uraoka (Dept. of Gastroenterology, National Tokyo Medical Center, Tokyo, Japan)