Microscopic examination using negative staining for rapid diagnosis of syphilis. Universa Medicina, [S. l.], v. 41, n. 1, p. 64–70, 2022. DOI: 10.18051/UnivMed.2022.v41.64-70. Disponível em: https://univmed.org/ejurnal/index.php/medicina/article/view/1254. Acesso em: 18 apr. 2025.