1. Grant BF, Goldstein RB, Saha TD, Chou SP, Jung J, Zhang H, et al. Epidemiology of DSM-5 alcohol use disorders: results from the national epidemiologic survey on alcohol and related conditions III. JAMA Psychiat. 2015;72:757–66.
2. Centers for Disease Control. Cigarette Smoking in the United States. 2017. htttps:// www.cdc.gov/tobacco/campaign/tips/resources/data/cigarette-smoking-in-united-states.html . Accessed 9 Oct 2017.
3. Grant BF, Saha TD, Ruan WJ, Goldstein RB, Chou SP, Jung J, et al. Epidemiology of DSM-5 drug use disorder: results from the national epidemiologic survey on alcohol and related conditions III. JAMA Psychiat. 2016;73:39–47.
4. National Institutes of Health. Health consequences of Drug Misuse. 2017. https://www.drugabuse.gov/publications/health-consequences-drug-misuse . Accessed 9 Oct 2017.
5. American Society of Addiction Medicine. Opioid Addiction Disease Facts and Figures. 2016. https://www.asam.org/docs/default-source/advocacy/opioid-addiction-disease-facts-figures.pdf . Accessed 20 Jan 2018.