1. 3rd Department of Surgery, ``AHEPA`` University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
2. Oncology Department, General Hospital of Serres, Serres, Greece
3. Department of Food Technology, School of Food Technology and Nutrition, Alexander Technological Educational Institute, Thessaloniki, Greece
4. Oncology Department, (NHS), General Hospital of Kavala, Kavala, Greece
5. Oncology Department, General Hospital of Volos, Volos, Greece
6. Sana Clinic Group Franken, Department of Cardiology/Pulmonology/Intensive Care/Nephrology, “Hof” Clinics, University of Erlangen, Hof, Germany
7. Department of Respiratory & Critical Care Medicine, Changhai Hospital, The Second Military Medical University, Shanghai, P. R. China
8. Department of Pulmonology, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation
9. Thoracic Surgery Department, ``Interbalkan`` European Medical Center, Thessaloniki, Greece
10. Oncology Department, Interbalkan European Medical Center, Thessaloniki, Greece
11. Second Department of Surgery, General University Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
12. Faculty of Medicine, University of Novi Sad, Institute for Pulmonary Diseases of Vojvodina, Novi Sad, Serbia
13. Oncology Department, ``Bioclinic`` Private Hospital, Thessaloniki, Greece
14. Department of Pharmacology & Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece