title: Necrotizing ulcerative gingivitis in mongoloid and non-mongoloid retarded individuals.
mesh_terms: D002675:Child, Preschool; D004314:Down Syndrome; D005260:Female; D005892:Gingivitis, Necrotizing Ulcerative / Q000453:epidemiology*; D006801:Humans; D008607:Intellectual Disability; D008297:Male