1 BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium (van Veggel L, Voets AM, Vanmierlo T).
2 Department of Psychiatry and Neuropsychology, Division of Translational Neuroscience, European Graduate School of Neuroscience, School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands (van Veggel L, Vanmierlo T).
3 University MS Center (UMSC), Hasselt-Pelt, Belgium (van Veggel L, Vanmierlo T).
4 Section of Psychopharmacology, Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands (Schreiber R).