Tennis Player Learned the Hard Way About Banned Ingredient

[unable to retrieve full-text content]The stimulant DMAA is banned by numerous sports groups, but is still found in supplements sold at stores including GNC, as a tennis player discovered too late.

Source: http://www.nytimes.com/2013/03/17/business/tennis-player-learned-the-hard-way-about-banned-ingredient.html?partner=rss&emc=rss

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