[1] Natl Canc Ctr, Dept Hepatobiliary & Pancreat Oncol, Tokyo, Japan
[2] Natl Canc Ctr, Dept Hepatobiliary & Pancreat Surg, Tokyo, Japan
[3] Tokyo Womens Med Univ, Inst Gastroenterol, Dept Surg, Tokyo, Japan
[4] Kyoto Univ, Grad Sch Med, Dept Surg, Kyoto, Japan
[5] Aichi Canc Ctr Hosp, Dep Gastroenterol Surg, Nagoya, Aichi, Japan
[6] Chiba Univ, Grad Sch Med, Dept Gen Surg, Chiba, Japan
[7] Kansai Med Univ, Dept Surg, Hirakata, Osaka, Japan
[8] Kansai Med Univ, Kori Hosp, Dept Internal Med, Osaka, Japan
[9] Wakayama Med Univ, Sch Med, Dept Surg 2, Wakayama, Japan
[10] Kindai Univ, Fac Med, Dept Surg, Osakasayama, Japan