title: Prescribing for drug addicts.
mesh_terms: D011307:Drug Prescriptions; D003932:Heroin / Q000652:urine; D006801:Humans; D008691:Methadone / Q000652:urine; D009020:Morphine / Q000652:urine; D019966:Substance-Related Disorders / Q000652:urine*
chemical_list: D003932:Heroin; D009020:Morphine; D008691:Methadone