Young e cigarette users are more likely to move on to cigarettes Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports E cigarettes: How they work, risks, and research E cigarettes less addictive than cigarettes Penn State University Don't ban e cigarettes as a reaction to the vaping illnesses. E cigarettes: a step forward for smokers, or a step into the unknown? Vaping The Guardian