E cigarette advertising exposure among South African adults in 2017: findings from a nationally representative cross sectional survey BMJ Open E cigarette newsAuthorities say e cigarette risks justify ban on vaping 'lifestyle' Vaping has soared in popularity over the last decade, growing from about 7 million users in 2011 to 41 million in 2018. E cigarette use rose amid outbreak of vaping associated lung injury Study Finds Ninth Graders Who Used E Cigarettes More Likely to Smoke WSJ