WASHINGTON (Reuters) - Electronic cigarette use among U.S. middle and high school students tripled in 2014 while cigarette use fell to record lows, according to provocative new data that is likely to intensify debate over whether e-cigarettes are a boon or bane to public health.

from Reuters: Most Read Articles http://ift.tt/1ENEDrc http://www.reuters.com
from Reuters: Most Read Articles http://ift.tt/1ENEDrc http://www.reuters.com
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