Key populations and healthcare providers perceptions, preferences and acceptability of HIV, Hepatitis B and C multiplex self-testing: A qualitative study - Elena Marbán-Castro; Caroline Thomas; Danil Nikitin; Catherine Thomas; Alla Bessonova; Sergei Bessonov; Claudius Mone Iye; Aibek Bekbolotov; Maia Japaridze; Mikaela Watson; Elena Ivanova; Olga Denisiuk; et al. (PLoS ONE, 2026)