Comparing drug testing and report of drugs use among prisioners of a correctional facility at São Vicente City, Brazil - Fabiani, Maria Claudia de Mattos; Carvalho, Heraclito B.; El Maerrawi, Ilham; Descio, Fernanda Justo; Andreucetti, G.; Leyton, Vilma (International Conference on the Reduction of Drug Related Harm, 2008)