The problem of chronic bronchitis in general practice.
D000368:Aged; D000628:Aminophylline / Q000627:therapeutic use; D001991:Bronchitis / Q000175:diagnosis / Q000628:therapy; D001993:Bronchodilator Agents / Q000627:therapeutic use; D002908:Chronic Disease; D005194:Family Practice; D005260:Female; D006333:Heart Failure / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D012131:Respiratory Insufficiency / Q000150:complications
D001993:Bronchodilator Agents; D000628:Aminophylline