Tobacco King, HUB & 10 other Loudoun smoke shops charged for selling to underage customers Vapers Show Chemical Changes in Their DNA That Are Linked to Cancer Milledgeville Smoke Shops Bobcat Multimedia Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Can Vaping Lead to Lung Cancer? Regional Cancer Care Associates Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times