@article{campos_cirenza_2011,  title={Prevention of thromboembolic events in patients with atrial fibrillation – new anticoagulants},  volume={9},  ISSN={1679-4508},  url={https://doi.org/10.1590/S1679-45082011MD2276},  DOI={10.1590/S1679-45082011MD2276},  number={3},  journal={einstein (São Paulo)},  publisher={Instituto Israelita de Ensino e Pesquisa Albert Einstein},  author={Campos, Alexandre Holthausen and Cirenza, Cláudio},  year={2011},  month={Jul},  pages={409–411} }