1. From the Neurology Service (J.E.M.-R., R.R., E.C., A.O., J.R.) and Immunology Unit (A.M., M.L.-B.), Hospital del Mar Medical Research Institute (IMIM), Universitat Pompeu Fabra, Barcelona, Spain; and Department of Pathology (J.M.-C., T.B., F.A.) and Vascular Surgery Department (L.R.), Hospital del Mar, Universidad Autónoma de Barcelona, Barcelona, Spain.