COPD: Causes, Symptoms & Treatment
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Chronic obstructive pulmonary disease (COPD) is a chronic lung disease that makes breathing progressively more difficult. It affects about 11 million people in the United States.COPD: Causes, Symptoms & Treatment
Chronic obstructive pulmonary disease (COPD) is a chronic lung disease that makes breathing progressively more difficult. It affects about 11 million people in the United States. Read more