COPD is a collection of diseases which make breathing gradually more difficult. The most common symptoms of COPD are sputum production, shortness of breath, and a productive cough. These symptoms are present for a prolonged period of time. Best COPD Treatment
COPD is a collection of diseases which make breathing gradually more difficult. The most common symptoms of COPD are sputum production, shortness of breath, and a productive cough. These symptoms are present for a prolonged period of time. Best COPD Treatment
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