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The forced mid-expiratory flow (FEF 25-75% ) value is a potentially sensitive marker of obstructive peripheral airflow. We aimed to assess whether FEF 25-75% can be an early predictor of chronic obstructive pulmonary disease (COPD).

international journal of copd

&lt;p&gt;FEF&lt;sub&gt;25-75%&lt;/sub&gt; Values in Patients with Normal Lung Function Can Predict the Development of Chronic Obstructive Pulmonary Disease&lt;/p&gt;