Vaping: It's hard to quit, but help is available Harvard Health E cigarettes should be offered to smokers, say doctors BBC News The Science Behind Quitting Smoking with Vaping: How E Cigarettes Help Break Nicotine Addiction SMOKO E Cigarettes Lung cancer risks persist with e cigarette use after quitting tobacco smoking Do E Cigarettes Help You Quit Smoking? Matthew Goldenberg D.O. Research shows e cigarettes 'not helpful in quitting smoking'