1. Inova Heart and Vascular Institute, Inova Fairfax Medical Campus, Falls Church, VA (S.S.S.).
2. Division of Cardiovascular Medicine, Department of Medicine, Duke University School of Medicine, Durham, NC (J.N.K.).
3. Levine Cardiac Intensive Care Unit, TIMI (Thrombolysis in Myocardial Infarction) study group, Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (D.A.M.).