@article{engin_aydın_ata_yavuz_2023,  title={Preoperative pulmonary artery hypertension as a risk factor: the tip of the iceberg},  volume={69},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.20221634},  DOI={10.1590/1806-9282.20221634},  number={5},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Engin, Mesut and Aydın, Ufuk and Ata, Yusuf and Yavuz, Senol},  year={2023},  pages={e20221634} }