title: [Observation on the classification of primary headaches].
authors.forename: J J
authors.initials: JJ
authors.lastname: Aguirre
mesh_terms: D006261:Headache / Q000145:classification* / Q000150:complications; D006801:Humans; D008950:MMPI; D010554:Personality Disorders / Q000150:complications / Q000175:diagnosis