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Kowdley, Kris V.; Lawitz, Eric; Poordad, Fred; Cohen, Daniel E.; Nelson, David R.; Zeuzem, Stefan; Everson, Gregory T.; Kwo, Paul et al. (2014). “Phase 2b Trial of Interferon-free Therapy for Hepatitis C Virus Genotype 1”. New England Journal of Medicine370 (3): 222–232. doi:10.1056/NEJMoa1306227. ISSN0028-4793.