Introduction: Electronic cigarettes are battery-powered devices that allow users to inhale vapor produced by heating a liquid (e-liquid) containing nicotine and other substances. The first such devices were introduced in China in 2003. and subsequently approved for use in the European Union in 2006 and the United States in 2007. The number of e-cigarette users is constantly growing. https://www.roneverhart.com/Verbatim-Store-n-Go-Dual-USB-Flash-Drive-99155/