In the above analyses, the authors controlled for level of nicotine dependence.

the current e-cigarettes on the market operate with ‘no tobacco, smoke, or combustion’ [3]. Furthermore, although traces of tobacco-specific nitrosamines (TSNAs) have been found in some e-cigarettes, similar traces of TSNAs are present in licensed NRTs [4–7]. This mislabelling is exacerbated by national and international regulations including e-cigarettes in their tobacco regulations or proposing to do so."

1. The financial conflicts of interest involved in these commentaries were not with tobacco companies, but with pharmaceutical companies. Every instance where "tobacco company" appears should be replaced with "pharmaceutical company," and "Big Tobacco" should be replaced with "Big Pharma." The article errantly refers to R.J. Reynolds, Lorillard, Brown & Williamson, Star Scientific, U.S. Tobacco, Liggett, and Santa Fe Natural Tobacco Company. These companies should have been listed as Elan Pharmaceutical, SmithKline Beecham, Glaxo Wellcome, GlaxoSmithKline, Nabi Biopharmaceuticals, Pfizer, Sanofi-Synthelabo, sanofi-aventis, Lederle, Ciba-Geigy, McNeil Consumer Products, and Pharmacia. We apologize for any inconvenience these errors may have caused.

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