1. Health Policy, Quality and Informatics Program, Health Services Research and Development, Center for Innovations in Quality, Effectiveness, and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
2. Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Houston, Texas
3. Section of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, Texas
4. Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
5. Department of Medicine, The Aga Khan University, Karachi, Pakistan
6. Division of Cardiology, University of Texas Health Science Center McGovern Medical School, Houston
7. Section of Cardiology, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
8. Section of Cardiovascular Research, Department of Medicine, Baylor College of Medicine, Houston, Texas