Qualitative inquiry into perceptions of HIV pre-exposure prophylaxis among people who inject drugs living with hepatitis C in Seattle, WA, USA oleh Michael P. Barry, Elizabeth J. Austin, Elenore P. Bhatraju, Sara N. Glick, Joanne D. Stekler, Elyse L. Tung, Ryan N. Hansen, Emily C. Williams, Alexander J. Gojic, Eleanor I. Pickering, Judith I. Tsui