@article{silva_2019,  title={At Last, a Sensitive Method to Detect Incipient Systolic Dysfunction!},  volume={113},  ISSN={0066-782X},  url={https://doi.org/10.5935/abc.20190198},  DOI={10.5935/abc.20190198},  number={4},  journal={Arquivos Brasileiros de Cardiologia},  publisher={Sociedade Brasileira de Cardiologia - SBC},  author={Silva, Carlos Eduardo Suaide},  year={2019},  month={Oct},  pages={746–747} }