^○Kiyoshi Narahashi^1,4, Teitetsu Niido², takashi kurosawa², Miyuki Yoshino¹, Takao Kojima¹, masayuki mizuno², Makoto Taga¹, Yoshihiro Furuichi², takashige sawada², Ryousuke Okada¹, Jiro Nishida¹, Takashi Nagashima², naotaka matsuura², Shigeru Sato³, Kouichi Yoshida¹, Takehito Otsubo⁴ (1.Dept. of Surgery, Niizashiki Central General Hospital, Saitama, Japan, 2.Dept. of Internal Medicine, Niizashiki Central General Hospital, Saitama, Japan, 3.Dept. of Surgery, TMG Muneoka Central Hospital, Saitama, Japan, 4.Dept of Gastrointestinal and General Surgery, St.Marianna Univ. School of Medicine, Kanagawa, Japan)

^○Yukari Shimada, Shunya Iseki, Takahiro Inoue, Kensuke Hamada, Masamichi Arao, Eri Tokunaga, Yuka Sumino, Hiroyuki Yoshida, Kanna Adachi, Motohito Hayashi, Toshinao Itani, Jun Mimura (Dept. of Gastroenterology,Nishi-Kobe Medical Center,Kobe,Japan)

^○Rika Kyo¹, Shuuji Siatou², Ichiro Kawana¹, Yoshihiro Kaneta¹, Katsuyuki Sanga¹, Kimihiro Hayashi¹, Arisa Serizawa¹, Junji Hattori¹, Eiji Yamada¹, Seitaro Watanabe¹, Chikako Tokoro¹, Satoshi Hishiki¹, Hideyuki Ike² (1.Div. of Gastroenterology,Saiseikai Yokohamashi-Nanbu Hospital,Yokohama,Japan, 2.Div. ofSurgery,Saiseikai Yokohamashi-Nanbu Hospital,Yokohama,Japan)

^○Satoshi Hosoya¹, Hideki Kanazawa¹, Koji Kuwano¹, Yuji Okoshi¹, Shoko Hayashi¹, Keiko Nakagomi¹, Masayuki Nemoto¹, Mika Iizuka¹, Yumiko Sakamoto¹, Kenichiro Ishii¹, Hayato Inoue¹, Goro Kaneda¹, masahiko watanabe² (1.Sagamihara National Hospital, Japan, 2.Kitasato University School of Medicine Department of Surgery)

^○Kazunari Sasaki, Bensuleiman Yahya, Kazuyo Fujimoto, Kenichi Hayashi, Junya Ando, Masao Hanafusa, Takuo Kado, Shiei Yoshida, Yuichi Harano, Satoshi Myojo, Takatoshi Nakashima, Shunichi Yoshida, Shigeaki Sawai (Akashi Medical Center, Japan)