 A 2017 review states, "Small companies initially dominated the electronic nicotine delivery systems (ENDS) market, and these ﬁrms had no links to the tobacco industry.Today, however, all transnational tobacco companies sell these products.Increased concentration of the ENDS market in the hands of the transnational tobacco companies is concerning to the public health community, given the industry's legacy of obfuscating many fundamental truths about their products and misleading the public with false claims, including that low-tar and so-called "light" cigarettes would reduce the harms associated with smoking.