title: Etiology, pathogenesis and classification of aphthous stomatitis and Behçet's syndrome.
mesh_terms: D001424:Bacterial Infections; D001528:Behcet Syndrome / Q000145:classification / Q000209:etiology* / Q000276:immunology / Q000382:microbiology*; D006561:Herpes Simplex / Q000150:complications; D006801:Humans; D013281:Stomatitis, Aphthous / Q000145:classification / Q000209:etiology* / Q000276:immunology; D014806:Vitamin B 12 Deficiency / Q000150:complications