1. From the Center of Excellence for Rehabilitation Medicine (S.K.S., G.K., M.W.M.P., A.J.H.P.), Rehabilitation Center De Hoogstraat Utrecht, the Netherlands; Rudolf Magnus Institute of Neuroscience (S.K.S., G.K., M.W.M.P., L.J.K., A.J.H.P.), University Medical Center Utrecht, the Netherlands; Institute for Rehabilitation Research (M.W.M.P.), Hoensbroek, the Netherlands; and Department of Neurology (L.J.K.), University Medical Center Utrecht, the Netherlands.