Relations among cigarette dependence, e cigarette dependence, and key dependence criteria among dual users of combustible and e cigarettes. Adolescents' E Cigarette Use: Increases in Frequency, Dependence, and Nicotine Exposure Over 12 Months Journal of Adolescent Health E liquide NHOSS CLASSIC VIRGINIA pour cigarette lectronique Teneur en nicotine 0 mg ml Development and initial validation of a new self report measure to assess perceived dependence on tobacco and nicotine products Scientific Reports E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News