| http://www.w3.org/ns/prov#value | - Specifically, men under age 65 with a history of 40 or more pack-years" (those who smoke a pack a day for 40 years or two packs a day for 20 years) of cigarette smoking face a 100 percent increased risk ? or double the risk ? of developing more aggressive forms of the disease as compared to nonsmokers, according to senior author Dr. Janet L. Stanford and colleagues.
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