title: Reply.
authors.affiliation: Department of Neurology, Jeroen Bosch Hospital's-Hertogenbosch, The Netherlands.|Department of Neurology and Clinical Neurophysiology, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.|Department of Rehabilitation, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Jeroen J J
authors.initials: JJ
authors.lastname: van Eijk
authors.affiliation: Department of Neurology, Jeroen Bosch Hospital's-Hertogenbosch, The Netherlands.|Department of Neurology and Clinical Neurophysiology, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.|Department of Rehabilitation, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Jan T
authors.initials: JT
authors.lastname: Groothuis
authors.affiliation: Department of Neurology, Jeroen Bosch Hospital's-Hertogenbosch, The Netherlands.|Department of Neurology and Clinical Neurophysiology, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.|Department of Rehabilitation, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Nens
authors.initials: N
authors.lastname: van Alfen