J I Verhoeven1, T J F Ten Cate2, F E de Leeuw1. 1. Department of Neurology, Radboud UMC, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands. 2. Department of Cardiology, Radboud UMC, Nijmegen, The Netherlands. tim.tencate@radboudumc.nl.