1. Division of Vascular and Endovascular Neurosurgery, Division of Neurosurgery, Department of Neurological Sciences, Hospital de Base, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, SP, Brazil
2. Division of Neurosurgery, Department of Surgery, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
3. Department of Medicine, Universidade Federal de Sergipe, Aracaju, SE, Brazil