1. Department of Cardiac Thoracic and Vascular Science, University of Padova Padova Italy
2. Department of Cardiology III University‐Hospital Münster Münster Germany
3. University Hospital Schleswig‐Holstein Kiel, Germany and DZHK (German Centre for Cardiovascular Research) Kiel Germany
4. Department of Cardiology Klinik für Innere Medizin, St.‐Johannes‐Hospital Dortmund Germany
5. Klinik für Thorax‐ und Kardiovaskularchirurgie Heart and Diabetes Center North Rhine‐Westphalia Bad Oeynhausen Germany
6. University Hospital Basel University of Basel Basel Switzerland
7. Statistics Department Edwards Lifesciences Prague Czech Republic
8. Department of Cardiothoracic Surgery King's College Hospital London UK