1. Department of Neurosciences, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
2. Department of Neurology, Hospital Universitario Central de Asturias, Oviedo, Spain
3. Department of Neurosciences, Neuropsychology Unit, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
4. Department of Clinical Psychology and Psychobiology, Universitat de Barcelona, Barcelona, Spain
5. Institut de Neurociències, University of Barcelona, Barcelona, Spain
6. Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
7. Neurology Service, Hospital Clínico Universitario de Valladolid, Valladolid, Spain