1. Department of Cardiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital University of Bern, Freiburgstrasse, Bern, Switzerland
2. Department of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Südring 15, Bad Krozingen, Germany
3. Department of Medicine and Institute of Health Policy, Management and Evaluation, Applied Health Research Centre, Li Ka Shing Knowledge Institute of St. Michael’s Hospital, University of Toronto, 30 Bond St, ON, Toronto, Canada
4. Department of Cardiac Surgery, Hospital Santa Cruz, Av. Prof. Dr. Reinaldo dos Santos, Carnaxide, Portugal
5. Cardiovascular R&D Unit, Department of Cardiothoracic Surgery, Porto University, Porto, Portugal
6. Department of Cardiothoracic and Vascular Surgery, German Heart Center, Augustenburger, Platz 1, Berlin, Germany
7. Department of Cardiovascular Surgery, Charite Berlin, Charite platz 1, Berlin, Germany