1. From the Departments of Internal Medicine (S.V.P., T.A., S.R.D., J.J.W., E.M.H.), Division of Cardiology, and the Donald W. Reynolds Cardiovascular Clinical Research Center (D.K.G., J.A.L.), University of Texas Southwestern Medical Center, Dallas, Tex; Department of Internal Medicine (E.C.K.), Division of Cardiology, University of Virginia, Charlottesville, Va; and Departments of Emergency Medicine (D.B.T., J.S.), Cardiac Catheterization Laboratory (S.D.P.), and Performance Improvement and Patient...