1. Division of Epidemiology, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
2. Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
3. Galter Health Sciences Library, Northwestern University Feinberg School of Medicine, Chicago, Illinois
4. Colorado School of Public Health, University of Colorado Anschutz Medical Center, Aurora
5. Center for Medicare & Medicaid Services, Baltimore, Maryland
6. The MITRE Corporation, McLean, Virginia
7. Associate editor, JAMA Cardiology