@article{guimarães_plácido_quadros_costa_pinto_2018,  title={Unexpected Mass in the Left Atrium},  volume={111},  ISSN={0066-782X},  url={https://doi.org/10.5935/abc.20180110},  DOI={10.5935/abc.20180110},  number={2},  journal={Arquivos Brasileiros de Cardiologia},  publisher={Sociedade Brasileira de Cardiologia - SBC},  author={Guimarães, Tatiana and Plácido, Rui and Quadros, Ana Catarina and Costa, José Marques da and Pinto, Fausto J.},  year={2018},  month={Aug},  pages={226–227} }