1. Department of Neurology, University Hospital “12 de Octubre,” Madrid, Spain
2. Research Institute (i+12), University Hospital “12 de Octubre”, Madrid, Spain
3. Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED) Madrid, Spain
4. Department of Medicine, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
5. Medical Image Analysis and Biometry Laboratory (LAIMBIO), Rey Juan Carlos University, Madrid, Spain
6. Department of Neurology, University Hospital of Getafe, Madrid, Spain
7. Faculty of Biomedical and Health Sciences, European University of Madrid, Madrid, Spain
8. Department of Neurology, University Hospital “Ramón y Cajal,” Madrid, Spain
9. Department of Neurology, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Hospital Clínico “San Carlos,” Madrid, Spain
10. Department of Neurology, University Hospital “Gregorio Marañón,” Madrid, Spain
11. Department of Neurology, University Hospital “Príncipe de Asturias,” Alcalá de Henares, Spain
12. Departamento de Psicobiología y Metodología en Ciencias del Comportamiento, Universidad Complutense de Madrid, Madrid, Spain