Teens using e cigarettes show evidence of same toxic chemicals as smokers: Study ABC News Another Gross Reason to Put Down the E Cigarettes American Lung Association Evidence update on e cigarette dependence: A systematic review and meta analysis ScienceDirect UMass study says e cigarettes with nicotine can help people quit smoking masslive.com Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports