BMJ journal retracts e cigarette paper after authors disclose tobacco industry funding late in the process Retraction Watch Research & Commentary: Despite Scientific Evidence, More Americans Believe E Cigarettes Are as Harmful as Tobacco Cigarettes The Heartland Institute ENSP EFA guide to implement the European regulation on e cigarettes European Network Is Vaping Safer than Smoking Cigarettes? National Center for Health Research Juul disregarded early evidence it was hooking teens