1. Department of Cardiology (R.M., F.Z., K.C.), Erasmus MC, University Medical Center Rotterdam, the Netherlands.
2. Department of Cardiac Surgery, Johns Hopkins School of Medicine, Baltimore, MD (C.S.O., G.L.W.).
3. Division of Cardiology, Department of Medicine (B.T., B.R., M.L.C., A.B.V.B., B.A.H., R.J.T.), Medical University of South Carolina, Charleston.
4. Division of Cardiology, Department of Medicine, University of Minnesota, Minneapolis (J.S., R.C.).
5. Division of Cardiology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD (N.A.G., K.S., S.H.).
6. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle (P.J.L.).
7. Department of Cardiothoracic Surgery (L.L.), Medical University of South Carolina, Charleston.
8. Department of Cardiothoracic Surgery (A.J.J.C.B.), Erasmus MC, University Medical Center Rotterdam, the Netherlands.