@article{bucharles_barreto_oliveira_2021,  title={Hypovitaminosis D in chronic kidney disease},  volume={43},  ISSN={0101-2800},  url={https://doi.org/10.1590/2175-8239-JBN-2021-S106},  DOI={10.1590/2175-8239-JBN-2021-S106},  number={4},  journal={Brazilian Journal of Nephrology},  publisher={Sociedade Brasileira de Nefrologia},  author={Bucharles, Sérgio Gardano Elias and Barreto, Fellype Carvalho and Oliveira, Rodrigo Bueno de},  year={2021},  pages={639–644} }