Affiliation: | 1. Department of Neurology, Center for Neurosciences, UZ Brussel, Vrije Universiteit Brussel, , Brussels, Belgium;2. Faculte de Psychologie et des Sciences de l“Education, , Mons, Belgium;3. National MS Center Melsbroek, , Melsbroek, Belgium;4. Department of Neurology, University Medical Center Groningen, , Groningen, The Netherlands |