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, Safe to vape? Clearing the air on e cigarettes Lincolnshire County Council Vaping: The Health Risks and How to Quit HelpGuide.org How to Quit Vaping, According to Experts The New York Times Benefits of Vaping vs Smoking HQ Vape & Smoke Shop Vaping: What are the medical impacts? BBC News