1. Prevalence and correlates of providing and receiving assistance with the transition to injection drug use;Gicquelais,2020
2. Availability, accessibility, and coverage of needle and syringe programs in prisons in the European Union;Moazen,2020
3. Policing practices and risk of HIV infection among people who inject drugs;Baker;Epidemiol Rev,2020
4. Adherence to and retention in medications for opioid use disorder among adolescents and young adults;Viera,2020
5. The influence of co-occurring substance use on the effectiveness of opiate treatment programs according to intervention type;Blondino,2020