Domingues, R.M.S.M. et al. 2014. Prevalence of syphilis in pregnancy and prenatal syphilis testing in Brazil: Birth in Brazil study . Revista de Saúde Pública. 48, 5 (Oct. 2014), 766–774. DOI:https://doi.org/10.1590/S0034-8910.2014048005114.