title: Treatment of mixed abusers in methadone maintenance: role of psychiatric factors.
mesh_terms: D000328:Adult; D000662:Amphetamines; D006801:Humans; D006993:Hypnotics and Sedatives; D008691:Methadone / Q000627:therapeutic use*; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders / Q000534:rehabilitation*; D013808:Therapeutic Community
chemical_list: D000662:Amphetamines; D006993:Hypnotics and Sedatives; D008691:Methadone