Electronic cigarettes: A safe substitute? New Scientist Predicting the pulmonary effects of long term e cigarette use: are the clouds clearing? European Respiratory Society Pod Based e Cigarettes Cause Mitochondrial Dysfunction, Eventual Lung Injury Docwire News Exploding E Cigarettes Are a Growing Danger to Public Health IEEE Spectrum E Cigarette How E Cigarettes Work, Health Risks & Teen Use Considerations on dosimetry for in vitro assessment of e cigarette toxicity Respiratory Research Springer Nature Link