title: Maintenance dosage as a critical factor in methadone maintenance treatment.
mesh_terms: D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008691:Methadone / Q000008:administration & dosage* / Q000627:therapeutic use; D009294:Narcotics / Q000652:urine; D019966:Substance-Related Disorders / Q000534:rehabilitation*
chemical_list: D009294:Narcotics; D008691:Methadone