| http://www.w3.org/ns/prov#value | - Erika Sward, assistant vice president of national advocacy for the American Lung Association, said she strongly encourages employers to include e-cigarettes in smoke-free policies because of unsafe chemicals contained in the products, such as benzine, formaldehyde and other carcinogens that could be harmful to employees using the products and those in the vicinity that inhale secondhand emissions.
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