1. Section of Cardiology, Department of Medicine, Baylor College of Medicine
2. University of Florida School of Public Health
3. Texas Heart Institute
4. The Methodist DeBakey Heart and Vascular Center Michael E. DeBakey Veterans Affairs Medical Center Health Services Research and Development Center of Excellence, and Section of Health Services Research, Baylor College of Medicine
5. The Methodist Hospital, and Health Policy and Quality Program, Michael E. DeBakey Veterans Affairs Medical Center Health Services Research and Development Center of Excellence, and Section of Health Services Research, Baylor College of Medicine