@article{stein_2020,  title={The respiratory subtype of panic disorder: reflections on the past and future of biological psychiatry},  volume={42},  ISSN={1516-4446},  url={https://doi.org/10.1590/1516-4446-2020-1076},  DOI={10.1590/1516-4446-2020-1076},  number={4},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Stein, Dan J.},  year={2020},  month={Jul},  pages={340–341} }