@article{2008,  title={Cartas ao editor},  volume={23},  ISSN={0102-7638},  url={https://doi.org/10.1590/S0102-76382008000200025},  DOI={10.1590/S0102-76382008000200025},  number={2},  journal={Brazilian Journal of Cardiovascular Surgery},  publisher={Sociedade Brasileira de Cirurgia Cardiovascular},  year={2008},  month={Apr},  pages={292–294} }