“…Twenty-one studies had an HIV testing focus [5,37,42,43,[49][50][51]56,64,65,[69][70][71]74,85,87,[94][95][96][97][98], of which one was focused on home-or self-testing [85]. Twenty-five studies focused on issues related to HIV harm reduction, including intentional transmission [9], stigma [41], sexual behaviours and 'high risk' behaviours [38,39,58,59,61,[76][77][78][79]89,90], female condom use [11], PrEP [39,42,62,[81][82][83]98], injecting drug use [54,56,58], and general preventative measures [63,66].…”