Usability and acceptability of oral fluid hepatitis C self-testing among people who inject drugs in Coastal Kenya: a cross-sectional pilot study. - Ivanova Reipold, Elena; Fajardo, Emmanuel; Juma, Emily; Bukusi, David; Bermudez Aza, Elkin; Jamil, Muhammad S.; Johnson, Cheryl Case; Farquhar, Carey; Easterbrook, Philippa; Monroe-Wise, Aliza (BMC Infectious Diseases, 2022)