1 From the Neurology Department (A.C., C.S., J.P.G., M.M.), Trás-os-Montes and Alto Douro Hospital Center, Vila Real; and Santo António Hospital and University Center (R.T.), Porto, Portugal. [email protected].
2 From the Neurology Department (A.C., C.S., J.P.G., M.M.), Trás-os-Montes and Alto Douro Hospital Center, Vila Real; and Santo António Hospital and University Center (R.T.), Porto, Portugal.