1. From the Department of Neurosurgery (M.A.T., R.P., V.V., B.A.C., W.P.V., D.V.), Amsterdam UMC, University of Amsterdam; Department of Neurosurgery (M.R.G.), Clinical Neuroscience Centre, University Hospital Zurich, Switzerland; Department of Neurology and Neurosurgery (M.D.I.V., G.J.E.R.), UMC Utrecht Brain Centre, University Medical Centre Utrecht; Departments of Neurology (K.J.) and Neurosurgery (J.F.C.W.), Haaglanden Medical Centre, Den Haag; Departments of Neurosurgery (R.W.K.) and Neurology (N...