Relations among cigarette dependence, e cigarette dependence, and key dependence criteria among dual users of combustible and e cigarettes. Perceptions of e cigarettes Tobacco Use in Canada University of Waterloo Correspondance entre e liquide et cigarette Blog vape Nicovip E liquide aux sels de nicotine : Pourquoi et pour qui ? Milestones in the natural course of the onset of e cigarette dependence among adolescents and young adults: Retrospective study ScienceDirect