1. From the Department of Rehabilitation Medicine (M.M.V., M.H.H.-K., G.M.R.) and Department of Psychiatry, Section Medical Psychology and Psychotherapy (A.v.S., J.J.V.B.), Erasmus University Medical Center, Rotterdam, The Netherlands; Rotterdam Neurorehabilitation Research Department (RoNeRes), Rijndam Rehabilitation Center, Rotterdam, The Netherlands (M.M.V., M.H.H.-K., G.M.R.); and Department of Physical and Rehabilitation Medicine, Ghent University Hospital, Ghent, Belgium (E.L.).