IQOS (heated tobacco) replaces vaping as the next cigarette alternative Bridge Michigan Vaping: How E cigs Work (Infographic) Live Science Severe restrictions to be placed on the sale of most e cigarettes: FDA pennlive.com 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, E Cigarette: A Threat to Your Health VIMS&RC