title: Attrition at referral among heroin addicts.
mesh_terms: D001741:Black or African American; D001071:Appointments and Schedules; D001900:Boston; D003631:Day Care, Medical; D004636:Emergency Service, Hospital; D004651:Employment; D005260:Female; D006556:Heroin Dependence / Q000453:epidemiology / Q000628:therapy*; D006757:Hospital Units; D006760:Hospitalization; D006801:Humans; D007603:Jurisprudence; D008297:Male; D008691:Methadone; D010352:Patient Dropouts; D012017:Referral and Consultation; D012737:Sex Factors; D013689:Telephone; D014481:United States
chemical_list: D008691:Methadone