1. Postgraduate Program in Child and Adolescent Health, Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Sao Paulo Brazil
2. Department of Pediatrics, Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Sao Paulo Brazil
3. Health Sciences Center Ceara State University Fortaleza Brazil
4. Department of Public Health Federal University of Maranhão São Luís Brazil
5. Department of Social Medicine, Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Sao Paulo Brazil