1. University of Novi Sad, Faculty of Medicine Novi Sad, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Clinic for Thoracic Surgery, Sremska Kamenica, Serbia
2. Institute for Pulmonary Diseases of Vojvodina, Clinic for Thoracic Surgery, Sremska Kamenica, Serbia
3. University of Novi Sad, Faculty of Medicine Novi Sad, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Clinic for Thoracic Oncology, Sremska Kamenica, Serbia
4. University of Novi Sad, Faculty of Medicine Novi Sad, Novi Sad, Serbia + Oncology Institute of Vojvodina, Clinic of Radiation Oncology, Sremska Kamenica, Serbia