Hypersensitivity reactions in mucous membranes. I. The statistical relationship between hypersensivity diseases and recurrent oral ulcerations.
D006801:Humans; D006967:Hypersensitivity; D009055:Mouth; D009092:Mucous Membrane; D019226:Oral Ulcer; D014456:Ulcer
ALLERGY; MOUTH; MUCOUS MEMBRANE; ULCER