title: Headache classification and factor analysis with a pediatric population.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006261:Headache / Q000145:classification* / Q000209:etiology; D006801:Humans; D008297:Male; D008881:Migraine Disorders / Q000145:classification; D009119:Muscle Contraction; D010290:Parents; D012647:Self-Assessment; D011795:Surveys and Questionnaires