1. Division of Cardiovascular Medicine, Department of Internal Medicine; University of Nebraska Medical Center; Omaha Nebraska
2. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital; Center for Outcomes Research and Evaluation; New Haven Connecticut
3. Department of Biostatistics, Harvard School of Public Health; Boston Massachusetts
4. Section of Cardiovascular Medicine, Yale University School of Medicine; New Haven Connecticut
5. Section of Cardiac Surgery, Yale University School of Medicine; New Haven Connecticut
6. Division of Cardiovascular Medicine; Warren Alpert Medical School of Brown University; Providence Rhode Island
7. Lifespan Cardiovascular Institute; Providence Rhode Island
8. Department of Chronic Disease Epidemiology, Yale School of Public Health; New Haven Connecticut
9. Robert Wood Johnson Clinical Scholars Program, Department of Internal Medicine; Yale University School of Medicine; New Haven Connecticut