R. F. de S. Coelho, T. G. Souto, L. R. Soares, L. C. M. Lacerda, and M. E. L. Matão, “Knowledge and beliefs about sexually transmitted disease and HIV/AIDS among adolescents and young people of state public schools of the West region of Goiania city, Brazil”, Rev Patol Trop, vol. 40, no. 1, pp. 56–66, Apr. 2011.