A growing number of studies illustrate the dangers of e-cigarette use by adolescents, claiming they can serve as a gateway for future tobacco use by our nation's youth.
원문출처 : http://www.cnn.com/2015/12/31/health/where-we-stand-now-e-cigarettes/index.html
원문출처 : http://www.cnn.com/2015/12/31/health/where-we-stand-now-e-cigarettes/index.html