@article{2009,  title={2. Sopros cardíacos, valvopatias, próteses valvares e endocardite},  volume={93},  ISSN={0066-782X},  url={https://doi.org/10.1590/S0066-782X2009001500003},  DOI={10.1590/S0066-782X2009001500003},  number={6},  journal={Arquivos Brasileiros de Cardiologia},  publisher={Sociedade Brasileira de Cardiologia - SBC},  year={2009},  month={Dec},  pages={274–280} }