The epidemiology of acne vulgaris in a multi-ethnic adolescent population from Rotterdam, the Netherlands: a cross-sectional study

This is the supplementary material from the original research article: "The epidemiology of acne vulgaris in a multi-ethnic adolescent population from Rotterdam, the Netherlands: a cross-sectional study". We refer to the manuscript for the method and interpretation of these supplementary results.此为荷兰鹿特丹多民族青少年群体中寻常痤疮流行病学研究的补充材料：《荷兰鹿特丹多民族青少年群体中寻常痤疮的流行病学：一项横断面研究》。本部分内容详尽阐述了补充结果的实验方法及其解读，具体细节请参阅原文手稿。