1. University of Birmingham Center for Cardiovascular Sciences, City Hospital, Birmingham, UK
2. Department of Medicine, Cardiology Division, Duke University Medical Center, Durham, NC
3. Cardiología Department, Hospital Universitario de Getafe, Madrid, Spain
4. Division of Clinical Sciences, Cardiovascular Science, St George's University of London and Imperial College, London, UK
5. Department of Medicine, Massachusetts General Hospital, Boston, MA
6. Montreal Heart Institute, Montreal, Quebec, Canada
7. University Hospitals Birmingham NHS Trust, Birmingham, UK
8. Zena and Michael A. Wiener Cardiovascular Institute, Mount Sinai School of Medicine, New York, NY
9. University of Birmingham Center for Cardiovascular Sciences, University of Birmingham and Sandwell and West Birmingham NHS Trust, Birmingham, UK
10. Department of Cardiology and Angiology, Hospital of the University of Münster, Münster, Germany
11. German Atrial Fibrillation Competence NETwork (AFNET), Münster, Germany
12. Heart Failure and Cardiac Transplant Unit, Cardiology Hospital Santa Creu i Sant Pau, Barcelona, Spain