1. Centers for Disease Control and Prevention, Data from “Wide-ranging online data for epidemiologic research (WONDER).” http://wonder.cdc.gov. Accessed 19 October 2021.
2. Centers for Disease Control and Prevention, Data from "12 month-ending provisional number of drug overdose deaths by drug or drug class." https://www.cdc.gov/nchs/nvss/vsrr/drug-overdose-data.htm. Accessed 19 October 2021.
3. Unintentional Injury Mortality Among American Indians and Alaska Natives in the United States, 1990–2009
4. Drug and Opioid-Involved Overdose Deaths — United States, 2017–2018
5. Opinion: Policing and public health-strategies for collaboration;Shepherd;JAMA,2017