FILE - In this April 23, 2014 file photo, a man smokes an electronic cigarette in Chicago. On Tuesday, Jan. 5, 2016, the U.S.'s lead public health agency focused its attack on electronic cigarettes on the issue of advertising, saying too many kids see the ads. There are bans on TV commercials and some other types of marketing for regular cigarettes but there are no restrictions on advertisements for e-cigarettes. Most states, though, ban the sale of e-cigarettes to minors. (AP Photo/Nam Y. Huh, File)

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