1. Division of Pediatric Neurosurgery, Hospital Geral do Estado, Maceió, Brazil
2. Pediatric Neurosurgery Division, Santa Monica Teaching Maternity, Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, Brazil
3. Division of Pediatric, Hospital Geral do Estado, Maceió, Brazil
4. Intervention and Diagnostic Imaging Service (Angioneuro), Hospital Veredas, Maceió, Brazil
5. Department of Pediatric Oncology, Santa Casa de Misericórdia de Maceió, Maceió, Brazil
6. CESMAC University Center, Maceió, Brazil