title: Epidemiologic study on recurrent aphthous ulcerations among 512 Danish dental students.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003718:Denmark; D005260:Female; D006801:Humans; D008297:Male; D012008:Recurrence; D012737:Sex Factors; D013281:Stomatitis, Aphthous / Q000453:epidemiology*