1. Hedegaard H, Warner M, Miniño AM. Drug overdose deaths in the United States, 1999–2016. NCHS data brief, no 294. Hyattsville, MD: US Department of Health and Human Services, CDC, National Center for Health Statistics; 2017. https://www.cdc.gov/nchs/data/databriefs/db294.pdf
2. CDC. Wide-ranging online data for epidemiologic research (WONDER). Atlanta, GA: US Department of Health and Human Services, CDC, National Center for Health Statistics; 2016. https://wonder.cdc.gov
3. Increases in drug and opioid-involved overdose deaths—United States, 2010–2015.;Rudd;MMWR Morb Mortal Wkly Rep,2016
4. Trends in deaths involving heroin and synthetic opioids excluding methadone, and law enforcement drug product reports, by census region—United States, 2006–2015.;O’Donnell;MMWR Morb Mortal Wkly Rep,2017
5. CDC. Annual surveillance report of drug-related risks and outcomes—United States, 2017. Atlanta, GA: US Department of Health and Human Services, CDC; 2017. https://www.cdc.gov/drugoverdose/pdf/pubs/2017-cdc-drug-surveillance-report.pdf