Tobacco Control Chronic Disease Prevention & Health Promotion Division Electronic Cigarettes E cigarette flavors are toxic to white blood cells, warn scientists Vaping 101: How Do E Cigarettes Work? E cigarettes: How they work, risks, and research FDA permits the marketing of an e cigarette for the first time, paving the way for vaping products to be legally sold in the U.S. Roswell Park Comprehensive Cancer Center Buffalo, India bans e cigarettes over youth vaping fears CNN