Necrotizing ulcerative gingivitis in the military from ancient to modern times.
D001083:Arabia; D005060:Europe; D005892:Gingivitis, Necrotizing Ulcerative / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D008885:Military Dentistry / Q000266:history*; D014481:United States