1. United Nations Office on Drugs and Crime. World drug report 2019 (United Nations publication, sales No. E.19.XI.8). Vienna. United Nations Office on Drugs and Crime. 2019. cited 2022 Nov 23. Available from: https://wdr.unodc.org/wdr2019/
2. United Nations Office on Drugs and Crime. World drugs report 2020: global drug use increases, while COVID-19 impacts markets, report find. Vienna. United Nations Office on Drugs and Crime. 2020. cited 2021 Jan 22. Available from: https://wdr.unodc.org/wdr2020/en/exsum.html
3. Non-injection drug use and Hepatitis C Virus: A systematic review