[1] Univ Novi Sad, Fac Med, Clin Thorac Oncol, Inst Pulm Dis Vojvodina, Novi Sad 21000, Serbia
[2] Aristotle Univ Thessaloniki, G Papanikolaou Gen Hosp, Dept Pulm, Oncol Unit, GR-54006 Thessaloniki, Greece
[3] Univ Duisburg Essen, Univ Hosp, West German Lung Ctr, Dept Intervent Pneumol,Ruhrlandklin, Essen, Germany
[4] St Luke Private Hosp Hlth Excellence, Dept Cardiothorac Surg, Thessaloniki, Greece
[5] St Luke Private Hosp Hlth Excellence, Ear Nose & Throat Dept, Thessaloniki, Greece
[6] St Luke Private Hosp Hlth Excellence, Dept Med Oncol, Thessaloniki, Greece
[7] Univ Gen Hosp Alexandroupolis, Surg Dept NHS, Alexandroupolis, Greece
[8] Aristotle Univ Thessaloniki, Sch Med, AHEPA Univ Hosp, Dept Cardiothorac Surg, GR-54006 Thessaloniki, Greece