In this Thursday, May 18, 2017 file photo, packs of cigarettes are offered for sale at a convenience store in Helena, Mont. Tobacco companies have made claims about “safer” cigarettes since the 1950s, all later proven false. In some cases the introduction of these products, such as filtered and “low tar” cigarettes, propped up cigarette sales and kept millions of Americans smoking. Although the adult smoking rate has fallen to an all-time low of 15 percent in 2017, smoking remains the nation's leading preventable cause of death and illness, responsible for about one in five U.S. deaths. (AP Photo/Bobby Caina Calvan)
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