http://www.msnbc.msn.com/id/3660433/
http://www.sciencedaily.com/releases/2003/12/031205052952.htm
http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/
http://www.technologyreview.com/blog/editors/23880/
http://www.lef.org/news/LefDailyNews.htm?NewsID=8295&Section=Disease&source=DHB_090530&key=Body+ContinueReading

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