title: Helmet-related, external compression headache among police officers in Rio de Janeiro.
authors.affiliation: Headache Center of Rio, University Federal Fluminense, Brazil.
authors.forename: Abouch
authors.initials: A
authors.lastname: Krymchantowski
authors.forename: Jackeline Soraya
authors.initials: JS
authors.lastname: Barbosa
authors.forename: Marcio
authors.initials: M
authors.lastname: Cvaigman
authors.forename: Willians
authors.initials: W
authors.lastname: Lorenzatto
authors.forename: Marcus Tulius
authors.initials: MT
authors.lastname: Silva
mesh_terms: D000328:Adult; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006260:Head Protective Devices / Q000009:adverse effects* / Q000706:statistics & numerical data*; D020773:Headache Disorders / Q000453:epidemiology*; D006801:Humans; D008297:Male; D016495:Police / Q000706:statistics & numerical data*; D012189:Retrospective Studies