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. 2017 Aug 29;14(9):973. doi: 10.3390/ijerph14090973

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Prevalence of electronic cigarette (e-cigarette) use in teenagers, UK surveys 2015/2016. Notes: Youth Tobacco Policy Survey (YTPS), United Kingdom, n = 1213 (2016); Action on Smoking and Health Smokefree Great Britain-Youth Survey n = 1205 (2016); Schools Health Research Network (SHRN), Wales, n = 32,479 (11 to 16 year olds in 2015); and, Scottish Schools Adolescent Lifestyle and Substance Use Survey (SALSUS), n = 13,607 (13 year olds in 2015), n = 11,697 (15 year olds in 2015). Base for regular smokers in YTPS and ASH Smokefree GB is less than 50.