@article{2003,  volume={29},  ISSN={0102-3586},  url={https://doi.org/10.1590/S0102-35862003000300011},  DOI={10.1590/S0102-35862003000300011},  number={3},  journal={Jornal de Pneumologia},  publisher={Sociedade Brasileira de Pneumologia e Tisiologia},  year={2003},  month={May},  pages={171–173} }