Williams, PhD, MS, R.E., Sampson, BS, T.J., Kalilani, MBBS, PhD, L., Wurzelmann, MD, MPH, J.I. and Janning, PharmD, S.W. 2018. Epidemiology of opioid pharmacy claims in the United States. Journal of Opioid Management. 4, 3 (Jan. 2018), 145–152. DOI:https://doi.org/10.5055/jom.2008.0019.