1. From the Departments of Clinical Genetics (C.B., A.V.P., I.M.v.L, M.M.A.M.M.) and Experimental and Molecular Cardiology (C.B., A.V.P., M.W.V., A.A.M.W.), Academic Medical Center, Amsterdam; Departments of Cardiology (M.P.v.d.B, J.-W.V.), Medical Genetics (G.T.-S., A.H.v.d.H.), and Paediatrics (M.Th.E.B.-B.), Groningen University Hospital, Groningen; Departments of Medical Physiology (M.B.R.) and Cardiology (A.A.M.W.), Utrecht University Hospital, Utrecht, the Netherlands; and the Interuniversity...