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Response-guided therapy in chronic hepatitis C. There is weak evidence that the algorithm for genotype 1 can also be applied to genotype 4, and there is also weak evidence that the algorithm for genotypes 2 and 3 can be applied to genotypes 5 and 6, excluding 12-16 week therapy. The dotted lines indicate weak evidence. PEG, pegylated; IFN, interferon; HCV, hepatitis C virus; RVR, rapid virological response.
