Electronic Cigarette Use (Vaping) Among Adolescents: A Narrative Review of an Emerging Public Health Epidemic Cureus Beijing, China. 25th Sep, 2019. E cigarettes are sold in a grocery store in downtown Beijing on Wednesday, September 25, 2019. China, the world's largest tobacco market, may introduce regulations for the e cigarette E cigarettes: Philip Morris International Tobacco Tactics Vaping May Be More Dangerous Than Cigarette Smoking, Studies Show University Hospitals E Cigarette Ads Increase Likelihood of Teen and Young Adult Vaping UT Austin News The University of Texas at Austin