1. Center for Disease Control and Prevention. Increase in fatal drug overdoses across the United States driven by synthetic opioids before and during the COVID-19 pandemic. Health Alert Network; 2020. https://emergency.cdc.gov/han/2020/han00438.asp. December 17, 2020. Accessed 9 Sept 2021.
2. Ahmad FB, Rossen LM, Sutton P. Provisional drug overdose death counts. National Center for Health Statistics; 2021. https://www.cdc.gov/nchs/nvss/vsrr/drug-overdose-data.htm. Accessed 9 Sept 2021.
3. MSU-CIBER globalEDGE. State insights: Texas. https://globaledge.msu.edu/states/texas. Accessed 9 Sept 2021.
4. NIDA. Texas: opioid-involved deaths and related harms. National Institute on Drug Abuse website. https://www.drugabuse.gov/drug-topics/opioids/opioid-summaries-by-state/texas-opioid-involved-deaths-related-harms. April 3, 2020. Accessed 9 Sept 2021.
5. NIDA. California: opioid-involved deaths and related harms. National Institute on Drug Abuse website. https://www.drugabuse.gov/drug-topics/opioids/opioid-summaries-by-state/california-opioid-involved-deaths-related-harms. April 3, 2020. Accessed 9 Sept 2021.