The Johns Hopkins Institute for Global Tobacco Control's VAPER Study collected data on the most commonly used devices and liquids by U.S. adults who frequently use e cigarettes, along with related use E cigarettes and Vaping Idaho Office of Drug Policy Vaping Frequently Asked Questions LA County Department of Public Health Substance Abuse Prevention and Control PDF) E Cigarette Marketing and Communication: How E Cigarette Companies Market E Cigarettes and the Public Engages with E cigarette Information Electronic cigarette Wikipedia