title: [Methods and problems of prognostic studies in substance-dependent patients].
mesh_terms: D006801:Humans; D009042:Motivation; D011379:Prognosis; D012931:Social Environment; D019966:Substance-Related Disorders / Q000523:psychology / Q000534:rehabilitation*
vernacular_title: Methoden und Probleme prognostischer Untersuchungen bei Drogenabhängigen.