title: Correction of error: Methadone dosage and retention of patients in maintenance treatment.
authors.forename: J R
authors.initials: JR
authors.lastname: Caplehorn
authors.forename: J
authors.initials: J
authors.lastname: Bell
mesh_terms: D006556:Heroin Dependence / Q000534:rehabilitation; D006801:Humans; D008691:Methadone / Q000008:administration & dosage*
chemical_list: D008691:Methadone