^○Naotaka Maruoka, Masatsugu Nagahama, Yuichi Takano, Eiichi Yamamura, Hiroshi Takahashi (Gastroenterology,Showa Univ. Fjigaoka Hospital, Yokohama, Japan)

^○Ryo Morita¹, Kazunari Nakahara¹, Keigo Suetani¹, Hirofumi Kiyokawa¹, Shinjiro Kobayashi², FUMIO Ito¹ (1.Dep. of Gastroenterology and Hepatology, St. Marianna Univ., Sch. of Med, Kawasaki, Japan, 2.Dep. of Gastroenterogical and General Surgery, St. Marianna Univ., Sch. of Med, Kawasaki, Japan)

^○Takahisa Ogawa, Kei Ito, Yutaka Noda, Go Kobayashi, Shinsuke Koshita, Yoshihide Kanno, Kaori Masu, Yuji Iwashita, Yosuke Michikawa (Dept. of Gastroenterology, Sendai City Medical Center, Sendai, Japan)

^○Hiroki Kitamoto, Yohei Taniguchi, Masashi Fukushima, Masaya Wada, Takahiko Ito, Kazuhiro Matsumoto, Kazuya Hosotani, Tatsunori Minamide, Shuko Morita, Naoto Shimeno, satoko inoue, Hiroshi Tei, Yoshiki Suginoshita, Tetsuro Inokuma (Dept. of Gastroenterology, Kobe City Medical Center General Hospital, Hyogo, Japan)

^○Kei Yane, Akio Katanuma, Hiroyuki Maguchi (Center For Gastroenterology, Teine-Keijinkai Hospital, Japan)

^○So Nakaji, Nobuto Hirata, Toshiyasu Shiratori, Masayoshi Kobayashi (Kameda Medical Center, Japan)