1. Bose J, Hedden SL, Lipari RN, Park-Lee E, Key Substance Use and Mental Health Indicators in the United States: Results from the 2017 National Survey on Drug Use and Health, HHS Publication No. SMA 18-5068, NSDUH Series H-53, Rockville, MD: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, https://www.samhsa.gov/data/.
2. NIDA report Health Consequences of Drug Misuse Retrieved from https://www.drugabuse.gov/related-topics/health-consequences-drug-misuse 2019, April 2.
3. https://nida.nih.gov/drug-topics/trends-statistics/overdose-death-rates.
4. Balk JH. Dopamine signaling in reward-related behaviors. Front Neural Circuits. 2013;7:1–16. https://doi.org/10.3389/fncir.2013.00152.
5. Wise RA, Koob GF. The development and maintenance of drug addiction. Neuropsychopharmacology. 2014;39:254–62. https://doi.org/10.1038/npp.2013.261.