1. Opioid prescriptions soar: Increase in legitimate use as well as abuse;Kuehn;JAMA,2007
2. 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
3. The influence of prescription monitoring programs on chronic pain management;Wang;Pain Physician,2009
4. Deaths: Final Data for 2007;Xu;Natl Vital Stat Rep,2010