Soliciting partner names and contact information
A project‐trained APN counsellor met with each inmate enrolled in the study to explain the importance of informing former sex and/or drug injection partners of possible HIV exposure and to encourage them to get tested and into treatment if needed. Each participant was asked to identify and provide contact information for those partners at HIV risk whom they might want to be notified. Index participants were allocated subsequently to one of the study's two conditions: self‐tell only (Indonesia's standard of care) or the Impart APN choice model, using a numbered sealed envelope system to conceal allocation from research staff [