Wala, PhD, E.P., Holtman Jr, MD, PhD, J.R. and Sloan, MD, P.A. 2013. Ultralow dose fentanyl prevents development of chronic neuropathic pain in rats. Journal of Opioid Management. 9, 2 (Mar. 2013), 85–96. DOI:https://doi.org/10.5055/jom.2013.0150.