Electronic Cigarettes: No Smoking, But Lots Of Fuming by Amber Dance. The Lost Angeles Times. July 6, 2013.
(1) Personal vaporizers, and the liquid used with them that are laced with nicotine are so different that the ______________________________.
(2) A 2009 study of two kinds of e-cigarettes found _____________ in one type.
(3) So far there are no studies indicating ____________________.
(4) A professor of public health stated that even without the chemicals in traditional cigarettes, nicotine is __________________________.
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