1. Faculdade de Medicina do ABC, Santo André, SP, Brazil
2. Department of Neurosurgery, Faculdade de Medicina do ABC, Santo André, SP, Brazil
3. Department of Epidemiology, Faculdade de Medicina do ABC, Santo André, SP, Brazil
4. Department of Neurology and Neurosurgery, Faculdade de Medicina do ABC, Santo André, SP, Brazil