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Direct acting antiviral agents. Modified from Alexopoulou et al[121]. Interferon-based combination treatment for chronic hepatitis C in the era of direct acting antivirals. Annals of Gastroenterology 2015; 28: 55-65. NPIs: Nucleoside polymerase inhibitors; NNPIs: Non-nucleoside polymerase inhibitors; DAA: Direct acting antiviral.
