Amaral, E., Faúndes, A., Gonçales, N.S.L., Pellegrino Jr. , J., Souza, C.A. de and Silva, J.L.P. e 1996. Prevalence of HIV and Treponema pallidum infections in pregnant women in Campinas and their association with socio-demographic factors . São Paulo Medical Journal. 114, 2 (Mar. 1996), 1108–1116.