Effect on lung function and morning activities of budesonide/formoterol versus salmeterol/fluticasone in patients with COPD.
Ther Adv Respir Dis. 2009 Aug;3(4):1-11. doi: 10.1177/1753465809344870. Epub 2009 Sep 4.
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PMID: 19734176
Clinical Trial.