1. Thoraxcenter, Department of Cardiothoracic Surgery Erasmus University Medical Center Rotterdam The Netherlands
2. Department of Cardiothoracic and Vascular Surgery German Heart Centre Berlin Berlin Germany
3. DZHK (German Centre for Cardiovascular Research), partner site Berlin Berlin Germany
4. EUROMACS EACTS Windsor UK
5. Thoraxcenter, Department of Cardiology Erasmus University Medical Center Rotterdam The Netherlands
6. Department of Cardiovascular Surgery Institute for Clinical and Experimental Medicine Prague Czech Republic
7. Clinic for Thoracic and Cardiovascular Surgery, Heart and Diabetes Centre, NRW Ruhr University Bochum Bad Oeynhausen Germany
8. Department of Cardiac Surgery University Hospitals Leuven Leuven Belgium
9. Department of Cardiovascular Surgery Ege Üniversitesi Tıp Fakültesi Izmir Turkey
10. Department of Cardiovascular Surgery Universitäts‐Herzzentrum Freiburg‐Bad Krozingen Freiburg Germany