1. Department of Neurosurgery, Universidade Federal do Sergipe, Aracaju, SE, Brazil
2. Department of Neurosurgery, Hospital de Urgência do Sergipe, Aracaju, SE, Brazil
3. Department of Neurosurgery, Universidade do Vale do Sapucaí, Pouso Alegre, MG, Brazil
4. Department of Neurosurgery, Universidade Federal do Paraná, Curitiba, PR, Brazil
5. Department of Neurosurgery, Centro Universitário UniAtenas, Paracatu, MG, Brazil