1. From the Section of Advanced Heart Failure and Transplantation, Division of Cardiology (C.K.M., L.A.A., A.B.), Division of General Internal Medicine (C.N., D.D.M.), and Division of Cardiothoracic Surgery (J.C.C.), University of Colorado School of Medicine, Aurora; and Colorado Cardiovascular Outcomes Research Consortium, Denver (C.K.M., L.A.A., D.D.M.).