title: Headache; an etiologic approach; with special reference to the so-called vacuum headache.
authors.forename: H L
authors.initials: HL
authors.lastname: JONES
mesh_terms: D006261:Headache / Q000209:etiology*; D006801:Humans; D014618:Vacuum
keywords: HEADACHE/etiology and pathogenesis; HEADACHE/vacuum