A Review of Toxicity Mechanism Studies of Electronic Cigarettes on Respiratory System Research Shows E Cigarette Vapor Exposure Amplifies Harmful Inflammatory Response in Influenza A E cigarette warnings lower vaping interest and raise quit intentions UNC Lineberger Comprehensive Cancer Center Misconceptions about e cigarette safety might be stopping smokers using them to quit The truth about e cigarettes IQAir International La cigarette lectronique, "pas si inoffensive" franceinfo