Wala, PhD, E.P., Sloan, MD, P.A. and Holtman Jr, MD, PhD, J.R. 2011. Effect of prior treatment with ultra-low-dose morphine on opioid- and nerve injury-induced hyperalgesia in rats. Journal of Opioid Management. 7, 5 (Sep. 2011), 377–389. DOI:https://doi.org/10.5055/jom.2010.0079.