@article{2003,  volume={49},  ISSN={0104-4230},  url={https://doi.org/10.1590/S0104-42302003000100028},  DOI={10.1590/S0104-42302003000100028},  number={1},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  year={2003},  month={Jan},  pages={21–23} }