title: Trick or treatment.
authors.forename: G
authors.initials: G
authors.lastname: Clark
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003419:Crisis Intervention; D005260:Female; D006266:Health Education; D006556:Heroin Dependence / Q000517:prevention & control*; D006801:Humans; D008297:Male; D011203:Poverty; D012606:Scotland; D016320:Substance Abuse Treatment Centers; D014478:Unemployment