@article{dittmar_1999,  title={O desafio da esquizofrenia},  volume={21},  ISSN={1516-4446},  url={https://doi.org/10.1590/S1516-44461999000100014},  DOI={10.1590/S1516-44461999000100014},  number={1},  journal={Brazilian Journal of Psychiatry},  publisher={Associação Brasileira de Psiquiatria},  author={Dittmar, Wulf H.},  year={1999},  month={Jan},  pages={80–81} }