title: [Field study on headache].
mesh_terms: D001317:Austria; D005260:Female; D006261:Headache / Q000453:epidemiology / Q000209:etiology; D006801:Humans; D008297:Male; D012737:Sex Factors; D012959:Socioeconomic Factors
vernacular_title: Feldstudie über Kopfschmerz.