1. From the Department of Cardiology, Leiden University Medical Center (V.D., R.J.v.B., M.B., C.J.W.B., N.A.M., A.C.T.N., G.N., N.R.L.v.d.V., C.Y., E.R.H., M.J.S., J.J.B.), Leiden, and Department of Epidemiology and Statistics, Erasmus University (E.B.), Rotterdam, the Netherlands.