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  1. Bronchitis - Symptoms and causes - Mayo Clinic

  2. Respiratory syncytial virus (RSV) - Symptoms & causes - Mayo Clinic

  3. Nasal congestion Causes - Mayo Clinic

  4. Symptoms and causes - Mayo Clinic

  5. Common cold - Symptoms and causes - Mayo Clinic

  6. Bronchitis - Diagnosis and treatment - Mayo Clinic

  7. Is it a cold or adult RSV? 3 ways to tell - Mayo Clinic Press

  8. Tight Chest, Congested Feeling no Cough ... - Mayo Clinic Connect

  9. Wheezing in adults - Mayo Clinic

  10. Chronic cough - Symptoms and causes - Mayo Clinic