title: A hypothesis concerning the difficulty of withdrawal from maintenance on methadone.
mesh_terms: D001007:Anxiety; D002140:California; D003153:Community Health Services; D005260:Female; D006556:Heroin Dependence / Q000188:drug therapy* / Q000628:therapy; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders
chemical_list: D008691:Methadone