PDF) Vaping as a Catalyst for Smoking? An Initial Model on the Initiation of Electronic Cigarette Use and the Transition to Tobacco Smoking Among Adolescents PDF) Examining the Smoking and Vaping Behaviors and Preferences of Vape Shop Customers The Effect of 12 Week e Cigarette Use on Smoking Abstinence at 1 Year: The E3 Trial ScienceDirect New research raises concerns that vaping may lead to smoking The i Paper