Simões, José A, et al. “Behavior Factors and Characteristics of Microbial Vaginal Flora Related to the Establishment of Bacterial Vaginosis in Sex Workers and Non- Sex”. Brazilian Journal of Sexually Transmitted Diseases, vol. 18, no. 2, June 2006, pp. 108-12, https://bdst.emnuvens.com.br/revista/article/view/633.