Efficacy of Sofosbuvir-Velpatasvir-Ribavirin Regimen for Retreatment of Chronic Hepatitis C in Patients With Prior DAA Failure: A Retrospective Study From a National Treatment Center

索非布韦-维帕他韦-利巴韦林方案治疗既往DAA治疗失败的慢性丙型肝炎患者的疗效：一项来自国家治疗中心的回顾性研究