title: Changes in the prevalence of migraine and other headaches during the first seven school years.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D005387:Finland; D006261:Headache / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008881:Migraine Disorders / Q000453:epidemiology*; D011627:Puberty; D012737:Sex Factors