title: Changes in illicit opioid use across Canada.
authors.forename: Benedikt
authors.initials: B
authors.lastname: Fischer
authors.forename: Jürgen
authors.initials: J
authors.lastname: Rehm
authors.forename: Jayadeep
authors.initials: J
authors.lastname: Patra
authors.forename: Michelle Firestone
authors.initials: MF
authors.lastname: Cruz
mesh_terms: D000328:Adult; D002170:Canada / Q000453:epidemiology; D015331:Cohort Studies; D011307:Drug Prescriptions; D005260:Female; D006556:Heroin Dependence / Q000453:epidemiology; D006801:Humans; D008297:Male; D009293:Opioid-Related Disorders / Q000453:epidemiology*