title: The high drug use community: a natural laboratory for epidemiological experiments in addiction control.
mesh_terms: D002641:Chicago; D003153:Community Health Services; D003695:Delivery of Health Care; D004196:Disease Outbreaks; D004812:Epidemiologic Methods; D005843:Geography; D006285:Health Planning; D006556:Heroin Dependence / Q000188:drug therapy / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D009934:Organization and Administration; D013997:Time Factors
chemical_list: D008691:Methadone