1. Available at: www.cdc.gov/asthma/asthmadata.htm. Accessed April 5, 2016.
2. Vital signs: overdoses of prescription opioid pain relievers – United States, 1999-2008;Paulozzi;MMWR Morb Mortal Wkly Rep,2011
3. Prescription painkiller overdoses: a growing epidemic, especially among women;Center for Disease Control and Prevention,2013
4. Increases in drug and opioid overdose deaths–United States, 2000-2014;Rudd;MMWR Morb Mortal Wkly Rep,2016
5. Number and age-adjusted rates of drug-poisoning deaths involving opioid analgesics and heroin: United States, 2000-2014;Center for Disease Control and Prevention,2015