Crack cocaine use and HIV/hepatitis association among prisioners of a correctional facility at São Vicente City, Brazil - Carvalho, Heráclito B. de; El Maerrawi, Ilham; Fabiani, Maria Claudia Mattos; Descio, Fernanda Justo; Andreucetti, G.; Ferreira, Juliana da Silva; Monteiro, Edinalva (International Conference on the Reduction of Drug Related Harm, 2008)