| http://www.w3.org/ns/prov#value | - The reason for the rise is not known, but it could be due to an increase in marketing and availability of electronic cigarettes and hookahs, as well as the perception that the products are "safer than cigarettes, the CDC said. [How Electronic Cigarettes Work (Infographic)] A large portion of kids who use tobacco are smoking products other than cigarettes, including cigars and hookahs, which are
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