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http://www.foxnews.com/story/0,2933,195821,00.html

http://www.foxnews.com/story/0,2933,176168,00.html

http://www.pta.org/Index.asp

http://www.foxnews.com/story/0,2933,159448,00.html

http://pediatrics.aappublications.org/cgi/content/full/123/2/431#R1

http://pediatrics.aappublications.org/cgi/content/full/119/1/182?ijkey=91e79065ca33c669c647d38f957f73acf7da9257\

http://www.nytimes.com/1998/04/07/us/many-schools-putting-an-end-to-child-s-play.html