UofL study shows nicotine in e cigarettes may not be harmless, as some claim UofL News Electronic cigarettes: Help or hazard? Harvard Health E cigarettes with a cigarette like level of nicotine are effective in reducing smoking and exposure to carcinogen, study finds VCU News Virginia Commonwealth University E Cigarettes: Flavored Products Fuel Campaign for Tobacco Free Kids FDA hazy on e cigarettes' safety CNN.com Electronic Cigarettes Pact Coalition