title: Alprazolam abuse and methadone maintenance.
authors.forename: A D
authors.initials: AD
authors.lastname: Fraser
mesh_terms: D000525:Alprazolam / Q000652:urine*; D006801:Humans; D007124:Immunoenzyme Techniques; D019966:Substance-Related Disorders / Q000175:diagnosis
chemical_list: D000525:Alprazolam