[1] Aristotle Univ Thessaloniki, Dept Surg 3, Ahepa Univ Hosp, Thessaloniki, Greece
[2] Democritus Univ Thrace, Dept Surg 2, Med Sch, Univ Hosp Alexandroupolis, Alexandroupolis, Greece
[3] Creta InterClin Private Hosp, Pulm Dept, Iraklion, Greece
[4] Aristotle Univ Thessaloniki, Ahepa Univ Hosp, Anesthesiol Dept, Thessaloniki, Greece
[5] Interbalkan European Med Ctr, Thorac Surg Dept, Thessaloniki, Greece
[6] Gen Hosp Kavala, Oncol Dept, Kavala, Greece
[7] Univ Erlangen Nurnberg, Dept Cardiol Pulmonol Intens Care Nephrol, Sana Clin Grp Franken, Hof Clin, Hof, Germany
[8] Tongji Univ, Shanghai East Hosp, Diagnost & Therapeut Ctr Resp Dis, Shanghai, Peoples R China
[9] Univ Med & Pharm Craiova, Craiova Cty Emergency Hosp, Gen Surg Clin 1, Craiova, Romania