TY - JOUR AU - Kwo, P; Gane, E J; Peng, C Y TI - Effectiveness of Elbasvir and Grazoprevir Combination, With or Without Ribavirin, for Treatment-Experienced Patients With Chronic Hepatitis C Infection JO - Gastroenterology VL - 152 PY - 2017 DO - 10.1053/j.gastro.2016.09.045 L3 - PubMed-ID: 27720838 SP - 164 EP - 175 e164 N1 - et al. ER -