1. McMaster University and Population Health Research Institute, Hamilton, Ontario Canada
2. Department of Cardiology, University Heart and Vascular Center Hamburg, Germany
3. Duke Clinical Research Institute, Duke University, Durham, NC
4. Montreal Heart Institute, Montreal, Quebec, Canada
5. St. George's University of London and Imperial College London, London, United Kingdom
6. Department of Cardiology and Intensive Care Medicine, St. Vincenz Hospital Paderborn, Germany
7. Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg–Eppendorf
8. Amphia Ziekenhuis, Breda, Netherlands