1. From the Departments of Pediatrics (I.K.L., A.W., D.M.K., J.W.G.), Clinical Epidemiology, Biostatistics, and Bioinformatics (I.K.L., M.H.H., B.A.H.), and Vascular Medicine (I.K.L., J.J.P.K), Amsterdam University Medical Centers, Amsterdam, and Imagelabonline and Cardiovascular, Erichem (E.G.) — both in the Netherlands.