WHO estimates at least 15 million teenagers use e cigarettes worldwide Reuters Vaping likely to cause cancer: New research warns A major review led by researchers at UNSW Sydney says nicotine vaping may be linked to both lung cancer and oral A comparison of the major toxins and adverse health effects of smoking Download Scientific Diagram Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports