^○Mizuho Aikawa, Masaya Uesato, Akira Nakano, Ryoma Urahama, Yukiko Ogura, Hiroshi Suito, Yoshihide Senba, Yorihiko Mutou, Hisahiro Matsubara (Dept. of Frontier Surgery Graduate School of Medicine, Chiba University, Japan)

^○Shunsuke Ogata (Dept. of Medical Gastroenterology, Kobe Rosai Hospital, Kobe, Japan)

^○Fukashi Sugiura (Okazaki Japan)

^○Akira Nakano, Masaya Uesato, Yorihiko Mutou, Yoshihide Senba, Ryoma Urahama, Hiroshi Suito, Yukiko Ogura, Mizuho Aikawa (Dept. of Surgery Frotier, Chiba Univ., Chiba, Japan)

^○Kensuke Yokoyama, Jun Ushio, Kiichi Tamada, Tsuyoshi Tomiyama, Hisashi Hatanaka, Norikatsu Numao, Hironori Yamamoto (Div. of Gastroenterology,Dept. of Internal Medicine, Jichi Med. Univ., Tochigi Japan)