title: A national study of the knowledge, attitudes and patterns of use of drugs by disadvantaged adolescents.
mesh_terms: D000293:Adolescent; D000328:Adult; D001290:Attitude; D006801:Humans; D011203:Poverty; D012959:Socioeconomic Factors; D012960:Socioenvironmental Therapy; D013239:Stereotyped Behavior; D019966:Substance-Related Disorders