1. From the Department of Neurology (Y.M.R., G.J.E.R.), Rudolf Magnus Institute of Neuroscience and the Complex Genetics Section, Department of Biomedical Genetics (C.W., R.v.S., M.W.), University Medical Center Utrecht, Utrecht, The Netherlands; the Departments of Neurology (Y.M.R., Y.B.W.E.M.R.) and Human Genetics (F.B., A.W.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; and the Department of Genetics (C.W.), University Medical Center Groningen, Groningen, The...