@article{okuro_freire_zin_quagliato_nardi_2020,  title={Panic disorder respiratory subtype: psychopathology and challenge tests – an update},  volume={42},  ISSN={1516-4446},  url={https://doi.org/10.1590/1516-4446-2019-0717},  DOI={10.1590/1516-4446-2019-0717},  number={4},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Okuro, Renata T. and Freire, Rafael C. and Zin, Walter A. and Quagliato, Laiana A. and Nardi, Antonio E.},  year={2020},  month={Jul},  pages={420–430} }