@article{leal_sakata_2014,  title={Methods for the assessment of opioid-induced hyperalgesia in the perioperative period},  volume={15},  ISSN={1806-0013},  url={https://doi.org/10.5935/1806-0013.20140064},  DOI={10.5935/1806-0013.20140064},  number={4},  journal={Revista Dor},  publisher={Sociedade Brasileira para o Estudo da Dor},  author={Leal, Plínio da Cunha and Sakata, Rioko Kimiko},  year={2014},  month={Oct},  pages={296–299} }