1 From the Department of Neurology (F.C.), University of Campinas-UNICAMP, São Paulo, Brazil; and Department of Neurology & Neurological Sciences (K.J.M.), Stanford University School of Medicine, Palo Alto, CA. fcendes@unicamp.br.
2 From the Department of Neurology (F.C.), University of Campinas-UNICAMP, São Paulo, Brazil; and Department of Neurology & Neurological Sciences (K.J.M.), Stanford University School of Medicine, Palo Alto, CA.