1. New England Heart and Vascular Institute Catholic Medical Center Manchester NH USA
2. Center for Outcomes Research and Evaluation, Yale New Haven Health System New Haven CT USA
3. Section of General Internal Medicine, Department of Medicine, Yale School of Medicine New Haven CT USA
4. Department of Health Policy and Management, Yale School of Public Health New Haven CT USA
5. Section of Cardiology, Department of Medicine University of California at San Francisco School of Medicine San Francisco CA USA
6. Section of Cardiovascular Medicine, Department of Medicine Yale School of Medicine; Center for Outcomes Research and Evaluation, Yale New Haven Health System New Haven CT USA
7. Beth Israel Deaconess Medical Center, Harvard Medical School Boston MA USA