@article{santos_grayson_2019,  title={Methylenetetrahydrofolate Reductase deficiency and anesthesia: importance of a detailed preoperative evaluation},  volume={69},  ISSN={0034-7094},  url={https://doi.org/10.1016/j.bjane.2019.05.001},  DOI={10.1016/j.bjane.2019.05.001},  number={6},  journal={Revista Brasileira de Anestesiologia},  publisher={Sociedade Brasileira de Anestesiologia},  author={Santos, Christiano dos Santos e and Grayson, Bernadette E.},  year={2019},  month={Nov},  pages={637–638} }