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Prevalence of airway obstruction assessed by lung function questionnaire.
Mayo Clin Proc. 2011 May;86(5):375-81. doi: 10.4065/mcp.2010.0787.
Mayo Clin Proc. 2011.
PMID: 21531880
Free PMC article.
Benefits of adding fluticasone propionate/salmeterol to tiotropium in moderate to severe COPD.
Hanania NA, Crater GD, Morris AN, Emmett AH, O'Dell DM, Niewoehner DE.
Hanania NA, et al.
Respir Med. 2012 Jan;106(1):91-101. doi: 10.1016/j.rmed.2011.09.002. Epub 2011 Oct 29.
Respir Med. 2012.
PMID: 22040533
Free article.
Clinical Trial.
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