1. From the Departments of Cardiology (M.G.P.J.C., P.L., M.J.C., P.A.D., J.M.T.d.B., R.N.W.H.) and Medical Genetics (J.J.v.d.S., M.R.N.), University Medical Center Utrecht, Utrecht, The Netherlands; the Department of Clinical Cardiology (A.A.M.W., J.M.T.d.B.), Academic Medical Center, Amsterdam, The Netherlands; the Departments of Cardiology (A.C.P.W.) and Genetics (J.P.v.T.), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands; the Department of Cardiology,...