title: [Epidemiology tools in dermatology].
authors.forename: J C
authors.initials: JC
authors.lastname: Roujeau
mesh_terms: D000152:Acne Vulgaris / Q000453:epidemiology; D000293:Adolescent; D003880:Dermatology / Q000706:statistics & numerical data*; D015340:Epidemiologic Research Design; D016021:Epidemiologic Studies; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D008297:Male