Retrospective challenges to pre-exposure prophylaxis (PrEP) use among people living with HIV—A qualitative analysis using the COM-B framework. - Hörst, Carina; Kitt, Hannah; Corkin, Helen; Mullen, Dolores; Shah, Ammi; Aghaizu, Adamma; Humphreys, Clare; Djuretic, Tamara (PLoS ONE, 2026)