E cigarettes more effective than other smoking cessation aids, new review finds Nuffield Department of Primary Care Health Sciences University of Oxford How the FDA Can Help More People Stop Smoking Johns Hopkins Bloomberg School of Public Health Major online retailers selling electronic cigarettes as smoking cessation products in the USA Tobacco Control E cigarettes: effective cessation tool or new gateway to smoking tobacco? UICC Vaping makes it harder, not easier, to quit smoking, study finds The Brighter Side of News