901f Efficacy and Safety of Grazoprevir/Elbasvir ± Ribavirin (RBV) for 12 or 16 Weeks in Patients With HCV G1, G4, or G6 Infection Who Previously Failed Peginterferon/RBV: C-EDGE Treatment-Experienced TrialPaul Y. Kwo, Barbara Haber, Cheng‐Yuan Peng et al.|Gastroenterology|2015Cited by 16