[1]
A. S. Benzaken, E. G. Garcia, . J. C. G. Sardinha, V. L. Pedrosa, and O. Loblein, “Risk perception for STD and behaviour changesin sex professionals of Manacapuru municipal ityin the Amazons, Brazil”, DST, vol. 15, no. 2, pp. 9–14, Apr. 2003.