[1] Univ Turin, Dept Thorac Surg, Turin, Italy
[2] Univ Hosp Leuven, Dept Thorac Surg, Louvain, Belgium
[3] Yale Univ, Dept Thorac Surg, New Haven, CT USA
[4] Pascale Fdn, Natl Canc Inst, Dept Thorac Surg, Naples, Italy
[5] Univ Mediterranean, N Univ Hosp, Dept Thorac Surg, Marseille, France
[6] Univ Hosp Syst Marseille, Marseille, France
[7] Univ Roma La Sapienza, Policlin Umberto I, Dept Thorac Surg, Rome, Italy