[Chronic bronchitis].
D000328:Adult; D000368:Aged; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D001991:Bronchitis / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000627:therapeutic use; D006801:Humans; D008875:Middle Aged
D000893:Anti-Inflammatory Agents; D001993:Bronchodilator Agents