1. Department of Genetics, University of São Paulo. Ribeirão Preto, SP, Brazil.
2. Division of Pediatric Oncology, Department of Pediatrics, University of São Paulo. Ribeirão Preto, SP, Brazil.
3. Division of Radiotherapy, Clinics Department, Faculty of Medicine of Ribeirão Preto, University of São Paulo. Ribeirão Preto, SP, Brazil.