https://www.nih.gov/news-events/news-releases/bronchodilators-don-t-improve-smoking-related-respiratory-symptoms-people-without-copd
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9/4/22 at 11:33am
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National Institutes of Health
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About 20–40% of adults with COPD symptoms but who aren’t diagnosed with COPD use these types of long-lasting inhalers .
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