1. Centers for Disease Control and Prevention/National Center for Health Statistics. CDC WONDER Online Database. Multiple cause of death 1999–2015. https://wonder.cdc.gov/mcd.html . Accessed Dec 2016.
2. Rudd RA, Seth P, David F, Scholl L. Increases in drug and opioid-involved overdose deaths—United States, 2010–2015. MMWR Morb Mortal Wkly Rep. 2016;65(5051):1445–52. doi: 10.15585/mmwr.mm655051e1 .
3. Warner M, Hedegaard H, Chen L. Trends in drug-poisoning deaths involving opioid analgesics and heroin: United States, 1999–2012. Health E-Stats. 2014. Retrieved from https://www.cdc.gov/nchs/data/hestat/drug_poisoning/drug_poisoning_deaths_1999-2012.pdf .
4. Kentucky House Bill 217, 2013 Regular Session, KY HB217 13RS. An ACT relating to controlled substances and declaring an emergency. 2013. http://www.lrc.ky.gov/record/13rs/hb217.htm . Accessed 29 Mar 2017.
5. Kentucky House Bill 1, 2012 Special Session, KY HB1 12SS. An ACT relating to controlled substances and making an appropriation therefor. 2012. http://www.lrc.ky.gov/record/12ss/hb1.htm . Accessed 29 Mar 2017.