1. 3rd University Surgery Department, AHEPA University General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Pulmonary Department, ‘Bioclinic’ Private Clinic, Thessaloniki, Greece
3. Microdiagnostics Private Pathology Laboratory, Thessaloniki, Greece
4. Thoracic Surgery Department, ‘Interbalkan’ European Medical Center, Thessaloniki, Greece
5. Oncology Department, General Hospital of Rhodos, Rhodos, Greece
6. Department of Cardiology/Pulmonology/Intensive Care/Nephrology, Sana Clinic Group Franken, ‘Hof’ Clinics, University of Erlangen, Hof, Germany
7. Department of Respiratory & Critical Care Medicine, Changhai Hospital, The Second Military Medical University, Shanghai, PR China
8. Pulmonary Department (NHS), ‘G Papanikolaou’ General Hospital, Thessaloniki, Greece
9. Faculty of Medicine, University of Novi Sad, Institute for Pulmonary Diseases of Vojvodina, Novi Sad, Serbia
10. Oncology Department, ‘Bioclinic’ Private Clinic, Thessaloniki, Greece
11. Ear, Nose & Throat (ENT) Department, Ludwig-Maximilians University of Munich, Munich, Germany