[1] Univ Fed Minas Gerais, Fac Med, Dept Clin Med, BR-30130100 Belo Horizonte, MG, Brazil
[2] Univ Fed Minas Gerais, Hosp Clin, Neurol Serv, BR-30130100 Belo Horizonte, MG, Brazil
[3] Fiocruz MS, Ctr Pesquisas Rene Rachou, Lab Imunol Celular & Mol, BR-30190002 Belo Horizonte, MG, Brazil