E Cigarette and E Liquid Regulations in the United States: An Overview E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports The Public Health Case for E Cigarette Flavors Are E Cigarettes a Healthy Way to Quit Smoking? WSJ E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News