MIAMI, FL - FEBRUARY 20: A customer picks out a smoking tip for her electronic cigarette at the Vapor Shark store on February 20, 2014 in Miami, Florida. As the popularity of E- cigarettes continue to grow, leading U.S. tobacco companies such as Altria Group Inc. the maker of Marlboro cigarettes are annoucing plans to launch their own e-cigarettes as they start to pose a small but growing competitive threat to traditional smokes. (Photo by Joe Raedle/Getty Images)
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Getty Images News Joe Raedle