title: Correlates and extent of drug abuse on a methadone maintenance program.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D002140:California; D006556:Heroin Dependence / Q000628:therapy* / Q000652:urine; D006801:Humans; D008297:Male; D008691:Methadone / Q000008:administration & dosage / Q000627:therapeutic use*; D009020:Morphine / Q000652:urine; D011613:Psychotherapy; D019966:Substance-Related Disorders / Q000453:epidemiology*; D013997:Time Factors
chemical_list: D009020:Morphine; D008691:Methadone