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  1. Types of Lung Diseases & Their Causes - WebMD

  2. COPD - Symptoms and causes - Mayo Clinic

  3. Lung Disease Lookup | American Lung Association

  4. Interstitial lung disease - Symptoms and causes - Mayo Clinic

  5. Diseases of the Lungs - Verywell Health

  6. Pulmonary fibrosis - Symptoms and causes - Mayo Clinic

  7. Lung Disease | Breathing Problems | Respiratory Failure

  8. Chronic obstructive pulmonary disease (COPD)

  9. Learn About COPD | American Lung Association

  10. Lung Diseases - National Institute of Environmental Health Sciences