[Serum theophylline levels in chronic obstructive pulmonary disease patients receiving uniphyllin].
Chang
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D000368:Aged; D003692:Delayed-Action Preparations; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000097:blood / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D013806:Theophylline / Q000097:blood* / Q000627:therapeutic use*
D003692:Delayed-Action Preparations; D013806:Theophylline