@article{nappo_sanchez_ribeiro_2012,  title={Is there a crack epidemic among students in Brazil?: comments on media and public health issues},  volume={28},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2012000900004},  DOI={10.1590/S0102-311X2012000900004},  number={9},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Nappo, Solange Aparecida and Sanchez, Zila M. and Ribeiro, Luciana Abeid},  year={2012},  month={Sep},  pages={1643–1649} }