1. Prevalence and characteristics of opioid use in the US adult population;Parsells Kelly;Pain,2008
2. Adult Use of Prescription Opioid Pain Medications, Utah, 2008;Centers for Disease Control (CDC);MMWR Morb Mortality Wkly Rep,2010
3. Therapeutic opioids: A ten-year perspective on the complexities and complications of the escalating use, abuse, and nonmedical use of opioids;Manchikanti;Pain Physician,2008
4. Therapeutic use, abuse, and nonmedical use of opioids: A ten-year perspective;Manchikanti;Pain Physician,2010
5. What are we treating with long-term opioid therapy?;Sullivan;Arch Intern Med,2012