Abstract:Background: Cigarette smoking is the leading preventable cause of mortality in the world and the main risk factor for lung and head and neck cancer. E-cigarettes (ECs) are battery-operated devices that deliver nicotine via inhaled aerosols. Although ECs are marketed as a less harmful alternative to tobacco cigarettes and a smoking cessation aid, the health risks posed by exposure to EC aerosols are unknown. Nonetheless, the use of ECs has increased exponentially since 2003, with EC users reporting inhaling on … Show more
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