Ruan, MD, X., Tadia, MD, R., Liu, MS, H., Couch, MD, J.P. and Lee, MD, PhD, J.K.-S. 2018. Edema caused by continuous epidural hydromorphone infusion: A case report and review of the literature. Journal of Opioid Management. 4, 4 (Jan. 2018), 255–259. DOI:https://doi.org/10.5055/jom.2008.0029.