Whereabouts are you from? http://xvidio.site xvideos Study participants were all people who wanted to quit smoking and were divided into three groups: just under 300 subjects received a three-month supply of commercially available e-cigarettes, each of which contained around 16mg nicotine. The same number received a three-month supply of nicotine patches, while 73 subjects received placebo e-cigarettes that contained no nicotine.