1. Brigham and Women’s Hospital Heart & Vascular Center, Harvard Medical School, Boston, Massachusetts
2. Richard and Susan Smith Center for Outcomes Research in Cardiology, Division of Cardiology, Beth Israel Deaconess Medical, Harvard Medical School, Boston, Massachusetts
3. Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina
4. Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
5. Christiana Care Health System, Newark, Delaware
6. Washington University School of Medicine in St Louis, St Louis, Missouri