Rodrigues Barbosa de Moraes, Alice, et al. “Epidemiological Profile of Gestational Syphilis and Congenital Syphilis in a Reference Center in Northeast Brazil: Risk Factors and Trend from 2019 to 2021”. Brazilian Journal of Sexually Transmitted Diseases, vol. 35, Apr. 2023, doi:10.5327/DST-2177-8264-2023351304.