@article{2004,  title={Cartas ao Editor},  volume={19},  ISSN={0102-7638},  url={https://doi.org/10.1590/S0102-76382004000100017},  DOI={10.1590/S0102-76382004000100017},  number={1},  journal={Brazilian Journal of Cardiovascular Surgery},  publisher={Sociedade Brasileira de Cirurgia Cardiovascular},  year={2004},  month={Jan},  pages={90–91} }