1. How to define e-cigarette prevalence? Finding clues in the use frequency distribution;Amato;Tob. Control.,2015
2. Directive of the European Union on the Approximation of the Laws, Regulations and Administrative Provisions of the Member States Concerning the Manufacture, Presentation and Sale of Tobacco and Related Products and Repealing Directive 2001/37/EC;Anon,2014
3. Young people's use of e-cigarettes across the United Kingdom: findings from five surveys 2015–2017;Bauld;Int. J. Environ. Res. Public Health,2017
4. Association between electronic cigarette use and changes in quit attempts, success of quit attempts, use of smoking cessation pharmacotherapy, and use of stop smoking services in England: time series analysis of population trends;Beard;BMJ,2016
5. A longitudinal study of electronic cigarette use among a population-based sample of adult smokers: association with smoking cessation and motivation to quit;Biener;Nicotine Tob. Res.,2015