1. From the Heart Failure Research Center (M.G.H., T.O., P.G.P., A.A.M.W., J.M.T.d.B., R.C.), Department of Cardiology and Experimental Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; and Interuniversity Cardiology Institute of The Netherlands (J.M.T.d.B.), Utrecht, The Netherlands.