title: Commentary.
authors.affiliation: Service of Neurology, University Hospital "Marqués de Valdecilla" (IFIMAV), University of Cantabria, and "Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas" (CIBERNED), Santander, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Riancho