Use of e-cigarettes in UK has tripled in two years, finds survey.
BMJ.
Zosia
Z
Kmietowicz
D000328:Adult; D004581:Electronics; D006801:Humans; D012907:Smoking / Q000453:epidemiology*; D016540:Smoking Cessation / Q000379:methods*; D061485:Tobacco Use Cessation Devices / Q000706:statistics & numerical data*; D006113:United Kingdom