@article{silva_miranda_barbosa_bicalho_2018,  title={Heart Rate and its Variability Assessed by Spectral Analysis in Elderly Subjects with Orthostatic Hypotension: A Case-Control Study},  volume={110},  ISSN={0066-782X},  url={https://doi.org/10.5935/abc.20180043},  DOI={10.5935/abc.20180043},  number={4},  journal={Arquivos Brasileiros de Cardiologia},  publisher={Sociedade Brasileira de Cardiologia - SBC},  author={Silva, Rose Mary Ferreira Lisboa da and Miranda, Carlos Eduardo de Souza and Barbosa, Maira Tonidandel and Bicalho, Maria Aparecida Camargos},  year={2018},  month={Apr},  pages={303–311} }