title: Barbiturate misuse in 'hard' drug addicts.
mesh_terms: D001463:Barbiturates; D005260:Female; D006556:Heroin Dependence / Q000150:complications; D006801:Humans; D008297:Male; D008691:Methadone; D019966:Substance-Related Disorders / Q000150:complications*; D006113:United Kingdom
chemical_list: D001463:Barbiturates; D008691:Methadone