1. Department of Pharmacology; Universidad de Extremadura; Cáceres Spain
2. Research Network on Adverse Reactions to Allergens and Drugs; Madrid Spain
3. Department of Medicine-Neurology; Hospital ‘Príncipe de Asturias’; Universidad de Alcalá; Alcalá de Henares Madrid Spain
4. Section of Neurology; Hospital Universitario del Sureste; Arganda del Rey Madrid Spain
5. Service of Neurology; Department of Medicine; Hospital Doce de Octubre; Universidad Complutense; Madrid Spain
6. CIBERNED, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas; Instituto de Salud Carlos III; Madrid Spain
7. Neurogenetics Laboratory; Division of Neurosciences; Center for Applied Medical Research; Universidad de Navarra; Pamplona Spain
8. Department of Neurology; Clínica Universitaria de Navarra; University of Navarra School of Medicine; Pamplona Spain
9. Department of Neurology; Hospital Universitari Mutua de Terrassa; Terrassa Barcelona Spain
10. Department of Neurology; Hospital Universitario de Salamanca; Salamanca Spain