Roderick P P W M Maas1, Aad Verrips2. 1. From the Department of Neurology & Donders Institute for Brain, Cognition, and Behaviour (R.P.P.W.M.M.), Radboud University Medical Center; and Department of Neurology (R.P.P.W.M.M., A.V.), Canisius Wilhelmina Hospital, Nijmegen, the Netherlands. roderick.maas@radboudumc.nl. 2. From the Department of Neurology & Donders Institute for Brain, Cognition, and Behaviour (R.P.P.W.M.M.), Radboud University Medical Center; and Department of Neurology (R.P.P.W.M.M., A.V.), Canisius Wilhelmina Hospital, Nijmegen, the Netherlands.