1. Unit of Thoracic Surgery, Azienda Ospedaliera San Camillo Forlanini , Rome, Italy
2. Unicamillus-Saint Camillus University of Health Sciences , Rome, Italy
3. Department of Cardiothoracic Surgery, Copenhagen University Hospital , Rigshospitalet, Copenhagen, Denmark
4. Department of Clinical Medicine, University of Copenhagen , Denmark
5. Alma Mater Studiorum, University of Bologna , Bologna, Italy
6. Department of Thoracic Surgery, University Hospitals Birmingham , England, United Kingdom
7. Institute of Immunology and Immunotherapy, University of Birmingham , United Kingdom
8. Department of Thoracic Surgery, St James University Hospital, Leeds Teaching Hospitals NHS Trust , Leeds, United Kingdom
9. Department of Thoracic Surgery, Hull University Teaching Hospitals NHS Trust, and Hull York Medical School, University of Hull , Hull, United Kingdom
10. James Cook University Hospital Middlesbrough , United Kingdom
11. Department of Thoracic Surgery, Shanghai Chest Hospital, Jiaotong University Medical School , Shangai, China
12. Department of Thoracic Surgery, Curie-Montsouris Thoracic Institute , Paris, France
13. Department of Cardiothoracic Surgery, Odense University Hospital , Odense, Denmark
14. Academic Division of Thoracic Surgery, The Royal Brompton Hospital and Imperial College London , United Kingdom
15. Department of Thoracic Surgery, Center for Thoracic Diseases, University Medical Center of the Johannes Gutenberg University , Mainz, Germany
16. Division of Thoracic Surgery, Imperial College NHS Healthcare Trust and National Heart and Lung Institute, Hammersmith Hospital , London, United Kingdom
17. Department of Cardiac Surgery and Cardiovascular Research, Dedinje Cardiovascular Institute , Belgrade, Serbia
18. Department of Cardiothoracic Surgery, Erasmus University Medical Center , Rotterdam, the Netherlands