1. Division of Cardiovascular Medicine, University of Maryland School of Medicine, Baltimore, MD
2. Division of Nephrology, University of Maryland School of Medicine, Baltimore, MD
3. Department of Pathology, University of Maryland School of Medicine, Baltimore, MD
4. Division of Cardiology, University of California at San Diego, La Jolla, CA
5. Division of Cardiology, Johns Hopkins University, Baltimore, MD
6. Division of Cardiology, University of Texas Southwestern Medical Center, Dallas, TX
7. Inova Heart and Vascular Institute, Falls Church, VA