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  1. Adult & Child Choking: Symptoms and First Aid | Red Cross

  2. Choking: First Aid and Prevention | Johns Hopkins Medicine

  3. Choking: First aid - Mayo Clinic

  4. What to Do If Someone Is Choking? First Aid for Choking - Heart …

  5. Adult Choking - Symptoms & First Aid Advice - St John Ambulance

  6. Choking first aid | What to do if someone is choking - Nuffield …

  7. Signs and Symptoms of Choking: How to Recognize a Choking

  8. What to Do When Someone is Choking: First Aid Steps

  9. Choking Definition, Symptoms, Causes, First Aid, Heimlich Maneuver

  10. What to Do if an Adult is Choking - Canadian Red Cross