title: Headache.
authors.affiliation: Department of Family Medicine, Faculty of Medicine, University of Ottawa, Ontario K1N 5C8, Canada. sharon_k_bal@yahoo.ca
authors.forename: Sharon K
authors.initials: SK
authors.lastname: Bal
authors.forename: Gary R
authors.initials: GR
authors.lastname: Hollingworth
mesh_terms: D020773:Headache Disorders / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008487:Medical History Taking / Q000379:methods; D010808:Physical Examination / Q000379:methods; D012008:Recurrence