http://journals.plos.org/plosone/article/asset?id=10.1371/journal.pone.0122544.PDF
«Amongst 1,242 smokers,224 (18%) reported smoking cessation after using nicotine-enriched
e-cigarettes for a minimum periodofsix months. Use ofsuch e-cigarettes was positively asso-
ciated with smoking cessation with a pooled Effect Size of 0.20 (95%CI 0.11-0.28). Use of
e-cigarettes was also associated with a reduction in the number of cigarettes used.»
«Amongst 1,242 smokers,224 (18%) reported smoking cessation after using nicotine-enriched
e-cigarettes for a minimum periodofsix months. Use ofsuch e-cigarettes was positively asso-
ciated with smoking cessation with a pooled Effect Size of 0.20 (95%CI 0.11-0.28). Use of
e-cigarettes was also associated with a reduction in the number of cigarettes used.»
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