1. From the Pauley Heart Center, Virginia Commonwealth University Medical Center (A.Y.T., K.A.E., K.K., J.H.); Division of Cardiology, Hunter Holmes McGuire Veterans Affairs Medical Center (A.Y.T., K.K., J.H.); and Virginia Commonwealth University School of Medicine (A.Y.T., K.A.E., K.K., J.H.), Richmond, VA.