1. Division of Cardiology Brigham and Women's Hospital Boston MA USA
2. Baylor Heart and Vascular Institute, Baylor University Medical Center Dallas TX USA
3. Novartis Pharmaceuticals Corporation East Hanover NJ USA
4. Montreal Heart Institute, Université de Montréal Montréal QC Canada
5. Medical University of South Carolina, Charleston and Ralph H. Johnston Veterans Administration Medical Center Charleston SC USA
6. Department of Molecular and Clinical Medicine University of Gothenburg Gothenburg Sweden
7. Center for Care Delivery and Outcomes Research, Minneapolis VA Health Care System, and University of Minnesota Minneapolis MN USA
8. British Heart Foundation Cardiovascular Research Centre, University of Glasgow Glasgow UK