E cigarettes' tricky path as harm reduction tool WHYY Research & Commentary: Largest Vaping Survey Finds Flavors Play Important Role in Tobacco Harm Reduction The Heartland Institute Mouth to Lung Vape Tanks Best MTL Vape Tanks UK ECIG STORE Tanks for Electronic Cigarettes Testing the influence of harm reduction messages on health risk attitudes, injunctive norms and perceived behavioral control Harm Reduction Journal Springer Nature Link E cigarettes increase harm to smokers, so should not be promoted as a harm reduction strategy (in 10 slides) Stanton Glantz blog