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Comment: 

PHE continues to use the same ‘independent experts’ for all their former and current released studies.
Yet the same ’independent experts’ have issued previous reports that have confirmed the UCSF study on e-cig users’ lack of cessation.

Brose, McNeil, Brown, West, Hitchman
https://www.ncbi.nlm.nih.gov/pubmed/25900312
Is the use of electronic cigarettes while smoking associated with smoking cessation attempts, cessation and reduced cigarette consumption? A survey with a 1-year follow-up.
CONCLUSIONS: Daily use of e-cigarettes while smoking appears to be associated with subsequent increases in rates of attempting to stop smoking and reducing smoking, BUT NOT WITH SMOKING CESSATION

McRobbie et al
http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(13)61842-5/fulltext
“Achievement of abstinence was substantially LOWER THAN WE ANTICIPATED for the power calculation, thus we had insufficient statistical power to conclude superiority of nicotine e-cigarettes to patches or to placebo e-cigarettes. We identified no significant differences in adverse events, with 137 events in the nicotine e-cigarettes group, 119 events in the patches group, and 36 events in the placebo e-cigarettes group.
Interpretation E-cigarettes, with or without nicotine, were modestly effective at helping smokers to quit, with similar achievement of abstinence AS WITH NICOTINE PATCHES, and few adverse events.
Uncertainty exists about the place of e-cigarettes in tobacco control”

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