Doctors warn about risks of second hand e cigarette vapors ABC7 New York E cigarettes: Japan Tobacco International Tobacco Tactics Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record 2nd Hand Vape Smoke Second hand smoke from e cigarettes 'poses NO risk to the public' E Cigarette and E Liquid Myths Debunked European girls aged 13 15 have world's highest rate of tobacco use for age group Smoking The Guardian