1. Department of Cardiovascular Surgery, Hospital Clínic, University of Barcelona, Villarroel 170, Barcelona, Spain
2. Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
3. Department of Cardiology, St. Antonius Hospital, Nieuwegein, the Netherlands
4. ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, University of Barcelona, Barcelona, Spain
5. Department of Cardiology, Hospital Clínic, University of Barcelona, Barcelona, Spain
6. Department of Cardiothoracic Surgery, Academic Medical Centre, Amsterdam, the Netherlands
7. Department of Cardiothoracic Surgery, St. Antonius Hospital, Nieuwegein, the Netherlands