1. From the Department of Vascular Medicine (R.H., M.N.V., M.D.T., E.d.G., J.J.P.K.); Department of Clinical Epidemiology, Biostatistics and Bioinformatics (B.A.H.); and Department of Cardiology (M.D.T.), Academic Medical Center, University of Amsterdam, and Foundation for the Identification of Persons with Inherited Hypercholesterolemia (I.K.), Amsterdam, The Netherlands.