For more information on choking, please visit the following links:
NOTE: clicking on the links below will take you to another website

www.mayoclinic.com/health/first-aid-choking/FA00025
Read an article from the Mayo Clinic that describes the first aid procedures you should know when someone is choking.

http://www.nlm.nih.gov/medlineplus/ency/article/000047.htm
Find illustrations and information on the Heimlich Maneuver and signs of choking.