@article{güven_gültekin_2021,  title={Could serum total cortisol level at admission predict mortality due to coronavirus disease 2019 in the intensive care unit? A prospective study},  volume={139},  ISSN={1516-3180},  url={https://doi.org/10.1590/1516-3180.2020.0722.R1.2302021},  DOI={10.1590/1516-3180.2020.0722.R1.2302021},  number={4},  journal={Sao Paulo Medical Journal},  publisher={Associação Paulista de Medicina - APM},  author={Güven, Mehmet and Gültekin, Hamza},  year={2021},  month={Jul},  pages={398–404} }