[1] Yokohama City Univ, Dept Surg, Yokohama, Kanagawa, Japan
[2] Gunma Univ, Div Biosyst Med, Dept Gen Surg Sci, Course Med Sci,Grad Sch Med,Subdiv Oncol, Gunma, Japan
[3] Osaka Univ, Grad Sch Med, Dept Gen Thorac Surg, Osaka, Japan
[4] Tokyo Med & Dent Univ, Grad Sch Med & Dent Sci, Dept Cardiovasc Surg, Tokyo, Japan
[5] Jichi Med Univ, Dept Thorac Surg, Shimotsuke, Tochigi, Japan
[6] Osaka Univ, Grad Sch Med, Dept Surg Gastroenterol, Osaka, Japan
[7] Natl Cerebral & Cardiovasc Ctr, Dept Cardiovasc Surg, Osaka, Japan
[8] Toho Univ, Dept Cardiovasc Surg, Sakura Med Ctr, Chiba, Japan
[9] Tokyo Womens Med Univ, Heart Inst Japan, Dept Cardiovasc Surg, Tokyo, Japan
[10] Tohoku Univ, Grad Sch Med, Div Cardiovasc Surg, Sendai, Miyagi 980, Japan
[11] Univ Occupat & Environm Hlth, Dept Surg 2, Fukuoka, Japan
[12] Kawasaki Med Sch, Dept Cardiovasc Surg, Okayama, Japan
[13] Kyushu Natl Canc Ctr, Dept Surg Gastroenterol, Fukuoka, Japan
[14] Kagawa Univ, Dept Gen Thorac Surg, Fac Med, Takamatsu, Kagawa, Japan