1. Department of Thoracic Surgery, University Hospitals Leuven , Leuven, Belgium
2. Department of Chronic Diseases and Metabolism, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Lung Transplant Unit, KU Leuven , Leuven, Belgium
3. Department of Thoracic Surgery, Policlinico Umberto I, University of Rome La Sapienza , Rome, Italy
4. Department of Thoracic Surgery, University Hospital Reina Sofia , Cordoba, Spain
5. Department of Thoracic Surgery, Pomeranian Medical University of Szczecin , Szczecin, Poland
6. Department of Thoracic Surgery, University of Padua , Padua, Italy
7. Department of Thoracic Surgery, University Hospital Zurich , Zurich, Switzerland
8. Department of Thoracic Surgery, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico , Milan, Italy