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(Created page with "== Introduction to obstructive lung diseases == Obstructive lung diseases are usually caused by increased airflow resistance, usually due to an obstruction at some point. Four types are important: * Chronic obstructive pulmonary disease (COPD) ** Chronic bronchitis ** Emphysema * Bronchiectasis * Asthma Emphysema and chronic bronchitis usually occur together, so they’re together called ''chronic obstructive pulmonary diseases'', or COPD. They occur together because t...") |
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