Resources on Choking
Cardiopulmonary  Resuscitation - CPR (Mayo Clinic)
Causes and Signals of Choking (American Red Cross)
Choking (Mayo Clinic)
Choosing Safe Toys (Nemours Foundation)
Common Causes of Choking (American Red Cross)
Heimlich Maneuver on a Child (The Harvard Medical School)
Heimlich Maneuver on an Adult (The Harvard Medical School)
Heimlich Maneuver on an Infant (The Harvard Medical School)
When kids swallow things: A guideline for parents (Mayo Clinic)