title: Subarachnoid hemorrhage diagnosis--reply.
authors.affiliation: Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Perry
authors.affiliation: Department of Emergency Medicine, Queen's University, Kingston, Ontario, Canada.
authors.forename: Marco L A
authors.initials: ML
authors.lastname: Sivilotti
authors.affiliation: Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Ian G
authors.initials: IG
authors.lastname: Stiell
mesh_terms: D003661:Decision Support Techniques; D005260:Female; D051270:Headache Disorders, Primary / Q000209:etiology*; D006801:Humans; D008297:Male; D011859:Radiography; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging*