Ombitasvir, paritaprevir, and ritonavir, with or without dasabuvir, plus ribavirin for patients with hepatitis C virus genotype 1 or 4 infection with cirrhosis (ABACUS): a prospective observational studySalvatore Petta, S. Fagiuoli, Pierluigi Russo et al.|The Lancet. Gastroenterology & hepatology|2017Cited by 19