1. Department of Medicine
2. Department of Epidemiology, and
3. Department of Radiology
4. Department of Internal Medicine, and
5. Department of Biomedical Engineering, University of Iowa Carver College of Medicine, Iowa City, Iowa
6. Department of Biostatistics and
7. Department of Biostatistics, Columbia University Medical Center, New York, New York
8. Division of Cardiology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland; and
9. Department of Medicine, University of Washington, Seattle, Washington
10. Department of Medicine and
11. Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania