1. Division of Pediatric Oncology; Department of Pediatrics; University Hospital of Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
2. Department of Biology; School of Philosophy, Science and Letters; Ribeirão Preto Brazil
3. Division of Pediatric Neurosurgery of the Department of Surgery and Anatomy; University Hospital of Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
4. Division of Radiology; University Hospital of Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil
5. Department of Pathology; University Hospital of Ribeirão Preto Medical School; University of São Paulo; Ribeirão Preto Brazil