1. Baylor College of Medicine, Houston, Texas, USA
2. Houston VA Center for Innovations in Quality, Effectiveness, and Safety (IQuESt), Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, USA
3. Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
4. Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas, USA
5. Advisory Board Company, Washington, DC, USA
6. Department of Family and Community Medicine, Baylor College of Medicine, Houston, Texas, USA
7. Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas, USA
8. Department of Cardiovascular Surgery, Texas Heart Institute, Houston, Texas, USA
9. Cardiovascular Research Institute, Baylor College of Medicine, Houston, Texas, USA