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. 2017 Apr 20;7(4):e015354. doi: 10.1136/bmjopen-2016-015354

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Forest plot of the overall prevalence rates of acne. A total of 25 studies were included in this meta-analysis. Through analysing in a random effects model, the overall pooled prevalence of acne was calculated as 39.2% (95% CI 0.310 to 0.479).