Nassif, G.J. and Miller, T.E. 2019. Evolving the Management of Acute Perioperative Pain Towards Opioid Free Protocols: A Narrative Review. Journal of Current Medical Research and Opinion. 2, 07 (Jul. 2019), 203–212. DOI:https://doi.org/10.15520/jcmro.v2i04.130.