[Treatment of chronic bronchitis].
D000397:Air Pollution; D001991:Bronchitis / Q000188:drug therapy* / Q000517:prevention & control; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D005100:Expectorants / Q000627:therapeutic use*; D006801:Humans; D010102:Oxygen Inhalation Therapy; D012907:Smoking
D001993:Bronchodilator Agents; D005100:Expectorants
Tratamiento de la bronquitis crónica.