title: The Canadian CT Head Rule.
authors.forename: M J
authors.initials: MJ
authors.lastname: Haydel
mesh_terms: D002170:Canada; D006259:Craniocerebral Trauma / Q000175:diagnosis*; D015600:Glasgow Coma Scale; D006801:Humans; D017410:Practice Guidelines as Topic; D014057:Tomography, X-Ray Computed / Q000706:statistics & numerical data*