ما هو مرض الإنسداد الرئوي المزمن و ما علاقته بالتدخين؟

Chronic obstructive pulmonary disease (COPD) is a common lung disease. Having COPD makes it hard to breathe. There are two main forms of COPD: Chronic bronchitis, which involves a long-term cough with mucus. Emphysema, which involves damage to the lungs over time.

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