1. Neurobiology Unit; Instituto de Investigaciones Biomedicas de Barcelona, Consejo Superior de Investigaciones Cientificas, CSIC; Barcelona Spain
2. Centro de Investigacion Biomedica en Red de Enfermedades Neurodegenerativas, CIBERNED; Madrid Spain
3. Neurology Service; Hospital Clinic de Barcelona; Barcelona Spain
4. Institut d'Investigacions Biomediques August Pi i Sunyer, IDIBAPS; Barcelona Spain
5. Neurology Department; Hospital de Sant Pau; Barcelona Spain