Health officials trying to tackle massive and 'tragic' use of vapes among teens CBC News What You Need to Know About Vaping and Using Marijuana: Don't Do It Encore Outpatient Services Teenagers who vape sweet flavoured e cigarettes more likely to stick with habit, study claims The Independent The Independent WHO estimates at least 15 million teenagers use e cigarettes worldwide Reuters Vaping 101: How to Use a Vape Pen for the First Time Myster