Consumption of benzylpenicillin as a syphilis control indicator. Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 59, p. e21931, 2023. DOI: 10.1590/s2175-97902023e21931 . Disponível em: https://journals.usp.br/bjps/article/view/213473.. Acesso em: 9 apr. 2025.