B. Announced a gradual reduction in nicotine levels in cigarettes to non-addictive levels.

The authors write: "FDA should immediately under the current rulemaking establish a product standard prohibiting flavors in e-cigarettes... ."

LAST：Alibaba China e-cigarette ego vapor variable volt/watt vamo v2 e cig |NEXT：2014 New generation full mechanical battery mod 1600mah 18650 ecig exgo