Largest US study of e cigarettes shows their value as smoking cessation aid High resistance coils in E cigarettes increase heavy metals leaching into aerosols to cause oxidants generation in human bronchial epithelial cells at air liquid interface: A unique non animal methodological approach on vaping studies ScienceDirect Guide to E cigarette and E liquid labels: Design, Regulations, and Best Practices E cigarette user found to have rare form of lung scarring typically found in metal workers European Respiratory Society warns against vaping for smoking cessation E Cigarettes: Patent Analysis and Technological Evolution