Long-term tetracycline treatment of chronic bronchitis.
D000900:Anti-Bacterial Agents; D001991:Bronchitis / Q000628:therapy*; D029481:Bronchitis, Chronic; D006801:Humans; D008134:Long-Term Care; D013752:Tetracycline / Q000628:therapy*
D000900:Anti-Bacterial Agents; D013752:Tetracycline
BRONCHITIS/therapy; TETRACYCLINE/therapy