Is Vaping Worse Than Smoking? St. Vincent's Medical Center Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub Vaping: What are the medical impacts? BBC News 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, To Vape or Not to Vape? St. Thomas Medical Group