1. From Erasmus University (C.L.d.K., F.M., J.A.S., P.W.S., A.F.W.v.d.S.), Rotterdam, the Netherlands; University Medical Center (M.J.S., C.S., E.V., G.P.), Utrecht, the Netherlands; Interuniversity Cardiology Institute of the Netherlands (M.J.S., C.S., J.A.S., G.P., A.F.W.v.d.S.)