[1] Tochigi Canc Ctr, Div Thorac Surg, Utsunomiya, Tochigi, Japan
[2] Japanese Fdn Canc Res, Dept Thorac Surg Oncol, Canc Inst Hosp, Tokyo, Japan
[3] Toho Univ, Sch Med, Dept Surg, Div Chest Surg, Tokyo, Japan
[4] Chiba Univ, Dept Gen Thorac Surg, Grad Sch Med, Chiba, Japan
[5] Natl Def Med Coll, Dept Thorac Surg, Saitama, Japan
[6] Osaka Univ, Dept Gen Thorac Surg, Grad Sch Med, Osaka, Japan
[7] Kimitsu Cent Hosp, Dept Thorac Surg, Chiba, Japan
[8] Yamagata Prefectural Cent Hosp, Dept Thorac Surg, Yamagata, Japan
[9] Dokkyo Med Univ, Dept Gen Thorac Surg, Mibu, Tochigi, Japan
[10] Aichi Canc Ctr Hosp, Dept Thorac Surg, Nagoya, Aichi, Japan
[11] Saitama Med Ctr, Dept Gen Thorac Surg, Saitama, Japan
[12] Fukujuji Hosp, Sect Chest Surg, Tokyo, Japan
[13] Hamamatsu Univ Sch Med, Dept Surg 1, Hamamatsu, Shizuoka, Japan
[14] Teikyo Univ, Sch Med, Dept Surg, Div Gen Thorac Surg, Tokyo, Japan