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San Francisco whose research focuses on tobacco

Currently, there are more than 250 brands of "e-cigarettes" available in such flavors as watermelon, pink bubble gum and Java, and in more colors than the iPhone 5C

National Institute on Drug Abuse

Uh oh, the quest for a safer cigarette may have backfired.
Oncotarget 7 , 2387423884 (2016)

Cheapasmokes expert guide for a perfect burn every time.
