Fracolli, Lislaine A., Liliam S. Faria, Juliana Guisardi Pereira, Rosemara Melchior, and Maria Rita Bertolozzi. 2008. “ Health Surveillance: Should It Be a Public Policy? ”. Saúde E Sociedade 17 (2): 184-92. https://doi.org/10.1590/S0104-12902008000200017.