1 Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, the Netherlands (S.L.V.M.S., N.J.B., M.F.G.H.M.V., V.P.M.v.E., J.A.J.V.).
2 Department of Cardiovascular Sciences, KU Leuven, Belgium (S.L.V.M.S.).
3 European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart (S.L.V.M.S., S.M., N.J.B., M.F.G.H.M.V., A.F.B., V.P.M.v.E., I.P.C.K., A.S.J.M.t.R., J.A.J.V.).
4 Department of Clinical Genetics, Maastricht University Medical Center, the Netherlands (S.L.V.M.S., I.P.C.K., J.A.J.V.).
5 Department of Cardiology, University Medical Center Utrecht, the Netherlands (S.M., A.S.J.M.t.R.).
6 Department of Genetics, University Medical Center Utrecht, Utrecht University, the Netherlands (A.F.B.).
7 Department of Cardiology, Zuyderland Medical Center, Heerlen, the Netherlands (M.R.H.).