[1] Univ Rome Sapienza, St Andrea Hosp, Fac Med & Psychol, Div Thorac Surg, Rome, Italy
[2] Univ Rome Sapienza, Fac Pharm & Med, Div Thorac Surg, Policlin Umberto I, Rome, Italy
[3] Fdn Eleonora Lorillard Spencer Cenci, Rome, Italy
[4] Univ Campania Luigi Vanvitelli, Div Thorac Surg, Naples, Italy