1. Department of Cardiothoracic Surgery, Erasmus MC, University Medical Centre, Rotterdam, Netherlands
2. Department of Cardiology, Columbia University Medical Center, New York-Presbyterian Hospital, Cardiovascular Research Foundation, New York, NY, USA
3. Department of Cardiovascular Surgery, Mount Sinai Saint Luke's, New York, NY, USA
4. Department of Cardiovascular Surgery, John Radcliffe Hospital, University of Oxford, Oxford, UK
5. Department of Cardiology, Imperial College London, London, UK
6. Cardiovascular Research Foundation, New York, NY, USA
7. Department of Cardiovascular Surgery, Piedmont Heart Institute, Atlanta, GA, USA
8. Department of Cardiology, National Institute of Cardiology, Budapest, Hungary
9. Department of Cardiothoracic Surgery, Medical Center Leeuwarden, Leeuwarden, Netherlands
10. Department of Cardiac Surgery, University of Szeged, Szeged, Hungary
11. Department of Surgery, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada
12. Department of Cardiovascular Surgery, University Hospitals, Cleveland, OH, USA