PDF) Global approaches to regulating electronic cigarettes 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 Vaping Side Effects & Withdrawal Symptoms. What is the Difference Between E Cigarettes, Vaping, and Smoking? Association between e cigarette use and parents' report of attention deficit hyperactivity disorder among US youth Rebranding to Economics for Health Economics for Health PDF) Electronic cigarette use behaviors and motivations among smokers and non smokers