However, the first large study testing this showed almost the opposite: Smokers who used e-cigarettes to quit were no more likely to succeed over the long term than smokers who used inactive placebo e-cigarettes
Pre-publication history The pre-publication history for this paper can be accessed here: Acknowledgements The authors would like to acknowledge the contribution of Dr Chung-won Lee from the Centers for Disease Control and Prevention who allowed us to use the cohort selection methodology she developed [9], and who provided valuable feedback on the manuscript
The new plain package cigarettes will be presented in olive green packaging, with the only visible logo a graphic health warning
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