1. Department of Radiology and Oncology Hospital das Clínicas, Faculdade de Medicina da USP São Paulo Brazil
2. Neuropsychology Division Department of Neurology Hospital das Clínicas, Faculdade de Medicina da USP São Paulo Brazil
3. Neurosurgery Division Department of Neurology Hospital das Clínicas, Faculdade de Medicina da USP São Paulo Brazil
4. Department of Biostatistics Universidade Estadual Paulista, Botucatu São Paulo Brazil