A. E. S. Cavalcante, M. A. M. Silva, A. R. M. Rodrigues, J. J. Mourão Netto, A. C. Moreira, and N. F. Goyanna, “Diagnosis and treatment of syphilis: an investigation with women seen in primary carein Sobral, Ceará”, DST, vol. 24, no. 4, pp. 239–245, Oct. 2012.