title: Decisions: does a patient with a thunderclap headache need a lumbar puncture?
authors.affiliation: Faculty of Medicine, University of Toronto, and St. Michael's Hospital, Toronto, Ontario.
authors.forename: Ben
authors.initials: B
authors.lastname: Fine
authors.forename: Navneet
authors.initials: N
authors.lastname: Singh
authors.forename: Richard
authors.initials: R
authors.lastname: Aviv
authors.forename: R Loch
authors.initials: RL
authors.lastname: Macdonald
mesh_terms: D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging; D003657:Decision Making; D003937:Diagnosis, Differential; D005260:Female; D051270:Headache Disorders, Primary / Q000209:etiology*; D006801:Humans; D013129:Spinal Puncture; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis*; D013997:Time Factors; D014057:Tomography, X-Ray Computed