@article{del porto_1999,  title={Conceito e diagnóstico},  volume={21},  ISSN={1516-4446},  url={https://doi.org/10.1590/S1516-44461999000500003},  DOI={10.1590/S1516-44461999000500003},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Del Porto, José Alberto},  year={1999},  month={May},  pages={06–11} }