This study provides data to support the hypothesis that among smokers who choose to quit using e-cigarettes or over-the-counter nicotine replacement products (and without behavioral support), the e-cigarettes produce about a two-fold increase in the quit rate.
For example:
LAST:High Drain 18350 Battery - *MINI MVari* |NEXT:Cheap wholesale e cigarette bottles, bottles of various colors ego, ego liquid bottle pricing