Epidemiological profile of syphilis cases in pregnant women from 2014 to 2018 in the state of Piauí. Research, Society and Development, [S. l.], v. 9, n. 7, p. e488974382, 2020. DOI: 10.33448/rsd-v9i7.4382. Disponível em: https://www.rsdjournal.org/rsd/article/view/4382. Acesso em: 5 dec. 2025.