1 Pulmonary Department - Oncology Unit, "G. Papanikolaou" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece ;
2 Pulmonary Department - Oncology Unit, "G. Papanikolaou" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece ; ; Pulmonary Department - Interventional Unit, "Ruhrlandklinik", University of Essen, Essen, Germany ;
3 Pulmonary Department - Interventional Unit, "Ruhrlandklinik", University of Essen, Essen, Germany ;
4 Department of Respiratory diseases, Changhai hospital, Yangpu District, Shanghai 200082, China.