Study finds 14% of Vietnamese students tried e cigarettes despite ban Karmanos Cancer Institute issues statement on e cigarettes and risk of vaping Karmanos News Scientific review finds e cigarettes likely cause lung and oral cancer Los Angeles Times E cigarettes Found to Cause Change in Mouth Bacteria Which Could Lead to Gum Disease or Oral Cancer Respiratory Therapy Vietnam bans vapes, will fine tourists up to US$78 and jail e cigarette traders, producers South China Morning Post