呼吸医学杂志

抽象的

Human Bronchial Epithelial Cells Exposed at Air-Liquid interface

Francesco Bono

The advent of electronic nicotine delivery systems, commonly called electronic-cigarettes, has had a profound effect on cigarette smoking habits in the United States. In 2006, the year before the introduction of electronic nicotine delivery systems to the United States’ market, 21% of adult Americans were cigarette smokers. By 2018 that percentage had been reduced to 13.7%. While 10 million of the 13 million electronic nicotine delivery systems users in the United States are adults, 3.5 million ENDS users are preteens and teens.