1. Substance Abuse and Mental Health Services Administration Overview of findings from 2014 survey on drug abuse and health. Office of Aplied Studies, NSDUH Series, H24 2015
2. World Health Organization Fact Sheets http://www.who.int/mediacentre/factsheets/fs204/en/
3. Centers for Disease Control and Prevention Viral hepatitis 2016 http://wwwnc.cdc.gov/travel/yellowbook/2016/infectious-diseases-related-to-travel/hepatitis-c
4. Centers for Disease Control and Prevention Viral hepatitis 2016 http://www.cdc.gov/hepatitis/hcv/hcvfaq.htm#section
5. Interventions for HIV and hepatitis C infections in recreational drug users;Khalsa;Clin Infect Dis,2010