Peindl, PhD, K. S., Mannelli, MD, P., Wu, ScD, L.-T. and Patkar, MD, A. A. (2007) “Trends in nonheroin opioid abuse admissions: 1992-2004”, Journal of Opioid Management, 3(4), pp. 215–223. doi: 10.5055/jom.2007.0007.