1. Increases in drug and opioid-involved overdose deaths – United States, 2010–2015;Rudd;MMWR Morb Mortal Wkly Rep,2016
2. Relationship between nonmedical prescription-opioid use and heroin use;Compton;N Engl J Med,2016
3. Vital signs: demographic and substance use trends among heroin users – United States, 2002–2013;Jones;MMWR Morb Mortal Wkly Rep,2015
4. Results from the 2012 National Survey on Drug Use and Health: Summary of National Findings,2013
5. Therapeutic opioids: a ten-year perspective on the complexities and complications of the escalating use, abuse, and nonmedical use of opioids;Manchikanti;Pain Phys,2008