Frontiers Carbonyl Emissions in E cigarette Aerosol: A Systematic Review and Methodological Considerations Interpersonal communication and perceived norms as social influence mechanisms of e cigarette use among adults: a systematic rev E Cigarette Use: Device Market, Study Design, and Emerging Evidence of Biological Consequences Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports E cigarette Characteristics, Safety Issues, & Regulation Britannica PDF) Effects of e cigarette smoking on periodontal health: A scoping review