Citizen social media post. Download Scientific Diagram Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment Smoking health information Effect of an electronic nicotine delivery device (e Cigarette) on smoking reduction and cessation: a prospective 6 month pilot study BMC Public Health Springer Nature Link The impact of the EU Tobacco Products Directive on e cigarette regulation in the UK ASH An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link