Stepanov, I.Jensen, J.Hatsukami, Dorothy K.Hecht, S.S.2007-06-192007-06-192006-05-10https://hdl.handle.net/11299/253To assess whether new, so-called "reduced exposure" tobacco products contain reduced levels of tobacco-specific cancer-causing agents, scientists at the University of Minnesota measured the level of tobacco-specific nitrosamines (TSNAs) in 19 different brands of tobacco products, including several new varieties.en-USSmokingTobacco UseComparative StudyReport