FOXNews.com: Racing death: How can runners be saved from cardiac arrest?

Cardiac arrests during long-distance races are very rare. But when they do occur, they are almost always deadly. So what can be done to prevent these tragedies? Should race organizers be stricter with their registration requirements? http://feeds.foxnews.com/~r/foxnews/health/~3/bumVCzDwCEA/

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