Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub Vaping' Increases Odds of Asthma and COPD Johns Hopkins Medicine 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, Many Young Adults Who Began Vaping as Teens Can't Shake the Habit KFF Health News Vaping Risks: What You Need to Know UI Health Care