Common Sense FDA Vape Regulation AEI Smoke an E Cigarette: A Simple Guide to Vaping Hon Lik invented the e cigarette to quit smoking but now he's a dual user Vaping The Guardian Sales of e cigs packed with nicotine soar as regulators try to crack down Thousands of unauthorized vapes are pouring into the US despite the FDA crackdown on fruity flavors The Seattle Times 5 Vaping Facts You Need to Know Johns Hopkins Medicine