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CHRONIC OBSTRUCTIVE PULMONARY DISEASE OVERVIEWCOPD, or chronic obstructive pulmonary disease, is a condition in which the airways in the lungs become damaged, making it increasingly difficult for air to pass in and out.There are two major kinds of damage that can cause COPD:???The airways in the lungs can become scarred and narrowed.???The air sacs in the lung, where oxygen is absorbed into the bl
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