Exacerbations of chronic bronchitis treatment with oxytetracycline.
D001991:Bronchitis / Q000628:therapy*; D029481:Bronchitis, Chronic; D006801:Humans; D010118:Oxytetracycline / Q000628:therapy*
D010118:Oxytetracycline
BRONCHITIS/therapy; OXYTETRACYCLINE/therapy