In addition, the authors concluded that: thirdhand smoke exposure among children causes "multiple short-term and longer health problems, many of which maynot manifest fully until later in life."

In her on CDC's "Tips from Former Smokers" anti-smoking campaign, Nancy Wride of Elements Behavioral Health made an interesting observation. On its web site describing a variety of possible strategies to quit smoking, the CDC does not list electronic cigarettes. Wride therefore asked the CDC why electronic cigarettes are not included on its web site as a potential smoking cessation aid.

Contrary to the assertion of the authors of this paper, simply being aware that the information one provides to Facebook may be used for research purposes does not constitute informed consent. The fact that users agreed to a Data Use Policy which notes that information may be used for research purposes does not, as the authors state, "[constitute] informed consent for this research."

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