title: Recent (1971-1972) methadone maintenance entrance by 500 New York City heroin users detoxified in 1961-63.
mesh_terms: D000328:Adult; D003710:Demography; D005006:Ethnicity; D005260:Female; D006556:Heroin Dependence / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D009519:New York City; D012189:Retrospective Studies; D012737:Sex Factors
chemical_list: D008691:Methadone