Electronic cigarettes drastically reduce exposure to toxic substances from tobacco Prevention Observatory of the Montreal Heart Institute Notes from the Field: Use of Electronic Cigarettes and Any Tobacco Product Among Middle and High School Students United States, 20112018 MMWR Public Health Consequences of E Cigarettes Association between prolonged dual use of cigarettes and E cigarettes and psychosocial factors among U.S. Smokers: Secondary data analysis from the 2013 to 2019 PATH study ScienceDirect