^○Yasuyuki Gen¹, Hikaru Hashimoto¹, Hayato Fukui¹, Yutaka Inada¹, Akifumi Fukui¹, Takeshi Nishimura¹, Kazuhiko Tokita¹, Yoshito Ito² (1.Dept. Gastro. Hepatol., North Med Center, Kyoto Prefectural Univ., Med., Japan, 2.Dept. Gastro. Hepatol., Kyoto Prefectural Univ., Med.)

^○Yoshihide Senba, Masaya Uesato, Mizuho Aikawa, Akira Nakano, Ryoma Urahama, Yukiko Ogura, Hiroshi Suito, Yorihiko Mutou, Hisahiro Matsubara (Dep.Of Frontier Surgery,Graduate Sch.Of.Med.,Chiba Univ.,Chiba,Japan)

^○Masashi Takemura, Mamiko Takii, Kayo Yoshida, Nobuaki Kaibe, Hirotaka Niwa, Tsutomu Oshima, Shojirou Kikuchi, Mitsuru Sasako (Dept. of Upper Gastrointestinal Surgey, Hyogo College of Medicine, Japan)

^○Kenji Noguchi¹, Takao Suzuki², katsuaki ukai¹ (1.Dept. of Gastroenterology, Sendai Medical Center, National Hospital Organization, Sendai, Japan, 2.Dept. of medical oncology, Sendai Medical Center, National Hospital Organization, Sendai, Japan)