Addiction (Abingdon, England) Ferraro, C F, Stewart, D E, Grebely, J, Tran, L T, Zhou, S, Puca, C, Hajarizadeh, B, Larney, S, Santo, T, Higgins, J P T, Vickerman, P T, Degenhardt, L, Hickman, M & French, C E 2020, ' Association between opioid agonist therapy use and HIV testing uptake among people who have recently injected drugs : a systematic review and meta-analysis ', Addiction . https://doi.org/10.1111/add.15316