Acute exacerbations of chronic obstructive pulmonary disease.
Barr
R Graham
RG
D000208:Acute Disease; D000628:Aminophylline / Q000627:therapeutic use; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D013806:Theophylline / Q000627:therapeutic use*
D001993:Bronchodilator Agents; D000628:Aminophylline; D013806:Theophylline