@article{oliveira_barroso_wagner_ponce_malbergier_stempliuk_andrade_2009,  title={Drug consumption among medical students in São Paulo, Brazil: influences of gender and academic year},  volume={31},  ISSN={1516-4446},  url={https://doi.org/10.1590/S1516-44462009000300008},  DOI={10.1590/S1516-44462009000300008},  number={3},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Oliveira, Lucio Garcia de and Barroso, Lucia Pereira and Wagner, Gabriela Arantes and Ponce, Julio de Carvalho and Malbergier, André and Stempliuk, Vladimir de Andrade and Andrade, Arthur Guerra de},  year={2009},  month={Sep},  pages={227–239} }