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- Are Patients with Preserved Ratio Impaired Spirometry (PRISm) Closely Related to the COPD Population?

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Medical Article
The Global Initiative for Chronic Obstructive Lung Disease (GOLD) defines spirometrically confirmed COPD as the ratio of forced expiratory volume during the first second (FEV1) to forced vital capacity (FVC) being smaller than 0.7. The severity of airflow obstruction is further defined through GOLD severity grades based on the ratio of FEV1 to its

Are Patients with Preserved Ratio Impaired Spirometry (PRISm) Closely Related to the COPD Population?
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