1) Department of Thoracic Surgery, International University of Health and Welfare Narita Hospital, Narita, Japan
2) Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
3) Division of Gastrointestinal Surgery, Department of Surgery, Kobe University, Kobe, Japan
4) Cancer Center, University of Hawaii, Honolulu, U.S.A.
5) Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, The University of Tokyo, Tokyo, Japan
6) Department of Gastrointestinal SurgeryⅠ, Hokkaido University, Sapporo, Japan

Ichiro Yoshino¹⁾, Soichiro Ishihara²⁾, Yoshihiro Kakeji³⁾, Hideko Yamauchi⁴⁾, Kiyoshi Hasegawa⁵⁾, Akinobu Taketomi⁶⁾