title: A treatment crisis: cocaine use by clients in methadone maintenance programs.
authors.affiliation: Addiction Research Center, National Institute on Drug Abuse, Baltimore, MD.
authors.forename: A F
authors.initials: AF
authors.lastname: Kolar
authors.forename: B S
authors.initials: BS
authors.lastname: Brown
authors.forename: W W
authors.initials: WW
authors.lastname: Weddington
authors.forename: J C
authors.initials: JC
authors.lastname: Ball
mesh_terms: D003042:Cocaine / Q000037:antagonists & inhibitors; D006801:Humans; D008691:Methadone / Q000627:therapeutic use*; D009293:Opioid-Related Disorders / Q000534:rehabilitation*; D019966:Substance-Related Disorders / Q000150:complications* / Q000453:epidemiology
chemical_list: D003042:Cocaine; D008691:Methadone