Affiliation: | 1. Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, District of Columbia;2. Department of Cardiology, Georgetown University School of Medicine, Washington, District of Columbia;3. Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, District of Columbia Cardiovascular Branch, Division of Intramural Research, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland |