title: E-cigarettes are "gateway devices" for smoking among young people, say researchers.
authors.affiliation: BMJ.
authors.forename: Zosia
authors.initials: Z
authors.lastname: Kmietowicz
mesh_terms: D000293:Adolescent; D055615:Electrical Equipment and Supplies / Q000706:statistics & numerical data*; D006801:Humans; D012108:Research Personnel; D016540:Smoking Cessation / Q000379:methods*; D000074606:Smoking Prevention; D014481:United States; D055815:Young Adult