title: Psychiatric emergency services in Canada.
authors.forename: J B
authors.initials: JB
authors.lastname: O'Regan
mesh_terms: D002170:Canada / Q000453:epidemiology; D003430:Cross-Sectional Studies; D004637:Emergency Services, Psychiatric / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D001523:Mental Disorders / Q000453:epidemiology*; D014505:Urban Population