WEBSTER, MD, Lynn; RICHARDS, MD, PHD, Patricia; STERN, PHD, Warren; KELEN, RN, BA, CNN, Robin. A double-blind, placebo-controlled study of dual-opioid treatment with the combination of morphine plus oxycodone in patients with acute postoperative pain. Journal of Opioid Management, [S. l.], v. 6, n. 5, p. 329–340, 2018. DOI: 10.5055/jom.2010.0030. Disponível em: https://wmpllc.org/ojs/index.php/jom/article/view/901. Acesso em: 19 may. 2025.