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  1. Chronic cough - Symptoms and causes - Mayo Clinic

  2. Cough Causes - Mayo Clinic

  3. Types of Coughs: Causes, Symptoms, and When It’s Serious

  4. Coughing Causes: Why You Cough and How to Prevent Coughing

  5. Cough: Causes, Emergency Symptoms, Treatment, Prevention

  6. Cough: Causes, Diagnosis, Treatment & Conditions - Cleveland Clinic

  7. Cough in Adults - Lung and Airway Disorders - The Merck Manuals

  8. Cough | Chronic Cough | Acute Cough | MedlinePlus

  9. Learn About Cough | American Lung Association

  10. What Causes Coughing? Allergy, Reflux, Mucus, and More