1. 3rd University General Hospital, “AHEPA” University Hospital, Thessaloniki, Greece
2. Thoracic Surgery Department, “Interbalkan” European Medical Center, Thessaloniki, Greece
3. Department of Respiratory & Critical Care Medicine, Changhai Hospital, The Second Military Medical University, Shanghai, P. R. China
4. Sana Clinic Group Franken, Department of Cardiology/Pulmonology/Intensive Care/Nephrology, “Hof” Clinics, University of Erlangen, Hof, Germany
5. Pulmonary Department (NHS), G.H. “G. Papanikolaou” Thessaloniki, Thessaloniki, Greece
6. Oncology Department, (NHS), General Hospital of Kavala, Kavala, Greece
7. Radiology Department, “G. Papageorgiou” University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
8. Oncology Department, General Hospital of Volos, Volos, Greece
9. Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland