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Probability distribution for the five high risk groups by age and fibrosis stage for the four macroareas (North, Central, South and Isles; A–D) in individuals with HCV with F0–F3 liver fibrosis stage. Solid lines represent the mean values. The shadow filled curves represent lower and upper 95% confidence intervals. F0–F3 = asymptomatic; undiagnosed/unlinked to care; GS = glass syringe; HCV = hepatitis C virus; PWID = people who inject drugs
