title: E-cigarettes latest: users on the up but rules tighten.
authors.forename: Zosia
authors.initials: Z
authors.lastname: Kmietowicz
mesh_terms: D000329:Advertising; D066300:Electronic Nicotine Delivery Systems / Q000191:economics / Q000706:statistics & numerical data*; D033161:Government Regulation; D006801:Humans; D016540:Smoking Cessation / Q000379:methods / Q000706:statistics & numerical data; D061485:Tobacco Use Cessation Devices / Q000191:economics / Q000706:statistics & numerical data; D006113:United Kingdom; D014481:United States