@article{silva_mendanha_gomes_2020,  title={The use of opioids in the treatment of oncologic pain in the elderly},  volume={3},  ISSN={2595-3192},  url={https://doi.org/10.5935/2595-0118.20200014},  DOI={10.5935/2595-0118.20200014},  number={1},  journal={BrJP},  publisher={Sociedade Brasileira para o Estudo da Dor},  author={Silva, Ledismar José da and Mendanha, Diego Machado and Gomes, Patrícia Pádua},  year={2020},  month={Jan},  pages={63–72} }