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), pp. 255–259. doi: 10.5055/jom.2008.0029.