title: Zopiclone abuse among polydrug users.
authors.forename: S
authors.initials: S
authors.lastname: Sikdar
authors.forename: S M
authors.initials: SM
authors.lastname: Ruben
mesh_terms: D053961:Azabicyclo Compounds; D003430:Cross-Sectional Studies; D004305:Dose-Response Relationship, Drug; D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D006993:Hypnotics and Sedatives; D015994:Incidence; D008297:Male; D010879:Piperazines; D019966:Substance-Related Disorders / Q000453:epidemiology*
chemical_list: D053961:Azabicyclo Compounds; D006993:Hypnotics and Sedatives; D010879:Piperazines; C515050:zopiclone