1. Department of Medicine, State University of Mato Grosso, Cárceres, Mato Grosso, Brazil
2. Department of Medicine, Universidade Católica de Pernambuco, Recife, Pernambuco, Brazil
3. Department of Neurology, Centro Universitário Unifacisa, Campina Grande, Paraíba, Brazil
4. Department of Neurosurgery, Hospital da Restauração, Recife, Pernambuco, Brazil
5. Department of Neuroscience, Federal University of Pernambuco, Recife, Pernambuco, Brazil
6. Department of Neurosurgery, Universidade de Pernambuco, Recife, Pernambuco, Brazil
7. Department of Neurology and Neurosurgery, Universidade de Pernambuco, Recife, Pernambuco, Brazil
8. Department of Medicine, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil