NCT04211909 - Study to Investigate the Efficacy and Safety of Sofosbuvir/Velpatasvir (SOF/VEL) Fixed-Dose Combination (FDC) and Sofosbuvir/Velpatasvir/Voxilaprevir (SOF/VEL/VOX ) FDC for 12 Weeks in Adults With Chronic Hepatitis C Virus (HCV) Infection | Crick | Crick