@article{zapata_2017,  title={Hypotension and bradycardia before spinal anesthesia},  volume={67},  ISSN={0034-7094},  url={https://doi.org/10.1016/j.bjane.2014.12.008},  DOI={10.1016/j.bjane.2014.12.008},  number={5},  journal={Revista Brasileira de Anestesiologia},  publisher={Sociedade Brasileira de Anestesiologia},  author={Zapata, Carlos Javier Shiraishi},  year={2017},  month={Sep},  pages={535–537} }