title: Amnesty's impact upon drug use: a pre-post study.
mesh_terms: D000328:Adult; D001294:Attitude to Health; D002188:Cannabis; D005069:Evaluation Studies as Topic; D006266:Health Education; D006306:Health Surveys; D003932:Heroin; D006801:Humans; D007603:Jurisprudence; D008297:Male; D008890:Military Psychiatry; D012925:Social Conformity; D019966:Substance-Related Disorders; D014768:Virginia
chemical_list: D003932:Heroin