Evaluating inhaler use technique in COPD patients.
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Int J Chron Obstruct Pulmon Dis. 2015 Jul 8;10:1291-8. doi: 10.2147/COPD.S85681. eCollection 2015.
Int J Chron Obstruct Pulmon Dis. 2015.
PMID: 26185435
Free PMC article.