title: [Methods and problems in the epidemiology of substance dependence].
mesh_terms: D003430:Cross-Sectional Studies; D004812:Epidemiologic Methods; D005860:Germany, West; D006801:Humans; D019966:Substance-Related Disorders / Q000453:epidemiology*
vernacular_title: Methoden und Probleme der Epidemiologie der Drogenabhängigkeit.