The abuse of barbiturates by heroin addicts.
D000328:Adult; D000367:Age Factors; D001463:Barbiturates; D004357:Drug Synergism; D004335:Drug and Narcotic Control; D005260:Female; D003932:Heroin; D006801:Humans; D007182:Income; D008297:Male; D009042:Motivation; D012737:Sex Factors; D012940:Social Problems; D013375:Substance Withdrawal Syndrome / Q000628:therapy; D019966:Substance-Related Disorders
D001463:Barbiturates; D003932:Heroin