Coughing is a sudden noisy expulsion of air from the lungs. It is a protective response that serves to clear the trachea, bronchi, and/or lungs of irritants and secretions, or to prevent aspiration of foreign materials into the lungs.

Symptom severities
Severe
3
Moderate
11
Mild
14
None
18
What patients with Lung Cancer report taking for the purpose of treating Cough
Patients
gefitinib 1
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