Allergy and chronic bronchitis: a pilot study of possible relationships.
D001991:Bronchitis / Q000209:etiology*; D029481:Bronchitis, Chronic; D006801:Humans; D006967:Hypersensitivity; D007154:Immune System Diseases; D010865:Pilot Projects
ALLERGY/manifestations; BRONCHITIS/etiology and pathogenesis