Part 4: 2000 2016 The Center for the Study of Tobacco and Society E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Disposable e cigarettes and their nicotine delivery, usage pattern, and subjective effects in occasionally smoking adults Scientific Reports Notes from the Field: Use of Electronic Cigarettes and Any Tobacco Product Among Middle and High School Students United States, 20112018 MMWR FDA ban on certain flavored e cigarettes 'doesn't appear to be working'