1. Department of Neurology-Hospital of Restoration, Recife, Pernambuco, Brazil;
2. Department of Pediatrics-Hospital of Restauração, Recife, Pernambuco, Brazil;
3. Aggeu Magalhães Institute, Oswaldo Cruz Foundation (Fiocruz), Recife, Pernambuco, Brazil
4. Department of Medicine-Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil;