1. From Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.
2. Cedars-Sinai Research Institute, Cedars-Sinai Medical Center, Los Angeles, California.
3. Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama.
4. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.
5. Cardiovascular Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
6. Division of Cardiology, Department of Medicine, Allegheny University of the Health Sciences, Pittsburgh, Pennsylvania.
7. Division of Cardiology, Rhode Island Hospital, Providence, Rhode Island.
8. Division of Cardiology, University of Southern California, Los Angeles, California.
9. National Heart, Lung and Blood Institute, NIH, Bethesda, Maryland.
10. Division of Cardiology, Department of Medicine, University of Florida, Gainesville, Florida.