@article{leoni_oliveira_pontes-neto_santos_leite_2017,  title={Cerebral blood flow and vasoreactivity in aging: an arterial spin labeling study},  volume={50},  ISSN={0100-879X},  url={https://doi.org/10.1590/1414-431X20175670},  DOI={10.1590/1414-431X20175670},  number={4},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Leoni, R.F. and Oliveira, I.A.F. and Pontes-Neto, O.M. and Santos, A.C. and Leite, J.P.},  year={2017},  pages={e5670} }