[1] S Camillo Forlanini Hosp, Dept Lung Dis, Pneumooncol Unit 5, I-00149 Rome, Italy
[2] Policlin Hosp, Div Med Oncol, Perugia, Italy
[3] Univ Turin, S Luigi Hosp, Thorac Oncol Unit, Orbassano, Italy
[4] SG Moscati Hosp, Med Oncol Unit, Avellino, Italy
[5] Inst Oncol, Med & Expt Oncol Unit, Bari, Italy
[6] Bellaria Hosp, Div Med Oncol, Bologna, Italy
[7] FoRO Oncol Res Fdn, Rome, Italy