1. US Department of Health and Human Services. HHS acting secretary declares public health emergency to address national opioid crisis (2017). https://www.hhs.gov/about/news/2017/10/26/hhs-acting-secretary-declares-public-health-emergency-address-national-opioid-crisis.html.
2. Centers for Disease Control and Prevention. Opioid data analysis (2017). https://www.cdc.gov/drugoverdose/data/analysis.html.
3. Price TE. Secretary price announces HHS strategy for fighting opioid crisis (2017). https://www.hhs.gov/about/leadership/secretary/speeches/2017-speeches/secretary-price-announces-hhs-strategy-for-fighting-opioid-crisis/index.html.