1. MS Clinic, Department of Neurology, University Hospital Center of São João, Oporto, Portugal
2. Neuropsychological Unit, Department of Psychology, University Hospital Center of São João, Oporto, Portugal
3. Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal
4. Faculty of Medicine, University of Porto, Porto, Portugal
5. Faculty of Health Sciences, University Fernando Pessoa, Porto, Portugal