@inbook{1166261527, author={Mark A. Schumacher and Allan I. Basbaum and Ramana K. Naidu}, editor={Katzung, Bertram G.}, title={Agonistas y antagonistas opioides}, booktitle={Farmacología básica y clínica, 14e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2019}, url={accessmedicina.mhmedical.com/content.aspx?aid=1166261527} }