1. Department of Pediatric Medicine, Federal University of Paraíba, João Pessoa, Brazil
2. Ribeirão Preto, São Paulo, Brazil
3. Pediatric Department, Federal University of Paraíba, João Pessoa, Brazil
4. Department of Pharmaceutical Sciences, Federal University of Paraiba, João Pessoa, Brazil
5. Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa, Brazil
6. Federal University of Paraíba, Brazil
7. Acute leukemia study group in Brazil, Department of Surgery, CCS, Federal University of Paraíba, João Pessoa, Brazil
8. Pediatric Leukemia and Lymphoma Group at the Divisão de Medicina Experimental, CPq, Instituto Nacional do Câncer, Rio de Janeiro, Brazil, @hotmail.com