© 2015 Sociedad Española de Neurología. Published by Elsevier Espana, S.L.U. This is an open access article under the CC BY-NC-ND license
Except where otherwise noted, this item's license is described as © 2015 Sociedad Española de Neurología. Published by Elsevier Espana, S.L.U. This is an open access article under the CC BY-NC-ND license