title: Low dosage methadone maintenance: a re-examination.
mesh_terms: D001741:Black or African American; D000367:Age Factors; D003156:Community Mental Health Services; D004522:Educational Status; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008691:Methadone / Q000008:administration & dosage*; D010414:Pennsylvania; D012737:Sex Factors; D012924:Social Conditions; D019966:Substance-Related Disorders / Q000188:drug therapy* / Q000534:rehabilitation
chemical_list: D008691:Methadone