Syphilis in pregnant women living in São Luís, Maranhão: profile and evolution from 2006 to 2018. RECIIS (Online) [Internet]. 2021 Jun. 30 [cited 2026 Sep. 30];15(2). Available from: https://homologacao-reciis.icict.fiocruz.br/index.php/reciis/article/view/2182