title: [Epidemiologic tools in the service of the study of drug abusers].
authors.forename: F
authors.initials: F
authors.lastname: Facy
mesh_terms: D000328:Adult; D004812:Epidemiologic Methods; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D008297:Male; D012107:Research Design; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000453:epidemiology*