@article{vasconcelos_2004,  title={Retardo mental},  volume={80},  ISSN={0021-7557},  url={https://doi.org/10.1590/S0021-75572004000300010},  DOI={10.1590/S0021-75572004000300010},  number={2},  journal={Jornal de Pediatria},  publisher={Sociedade Brasileira de Pediatria},  author={Vasconcelos, Marcio M.},  year={2004},  month={Apr},  pages={71–82} }