1. Department of Cardiac Surgery, S. Croce Hospital, Cuneo, Italy
2. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
3. Institute of Clinical Trials and Methodology, University College London, London, UK
4. Department of Heart and Vessels, Cardiac Surgery Unit and Heart Transplantation Center, S. Camillo-Forlanini Hospital, Rome, Italy
5. Department of Research and Third Mission Area, University of Turin, Turin, Italy
6. Division of Thoracic and Cardiovascular Surgery, Pontchaillou University Hospital, Rennes, France
7. Department of Cardiac Surgery, AOU “Città della Salute e della Scienza di Torino”, University of Turin, Turin, Italy
8. Department of Cardiology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
9. Department of Cardiac Surgery, Ramon y Cajal University Hospital, Madrid, Spain
10. Cardiothoracic and Vascular Department, Maastricht University Medical Center, Maastricht, Netherlands
11. Department of Cardiac Surgery, Hôpital Henri Mondor, Paris, France
12. Department of Cardiothoracic Surgery, Hospital de Santa Crux, Carnaxide, Portugal
13. Universitary Cardiac Surgery Unit, IRCCS Policlinico S. Donato, Italy
14. Department of Biomedical Sciences for Health, University of Milan, Milan, Italy