British teens with the highest test scores are less likely to smoke cigarettes yet more likely to drink alcohol and smoke pot compared with teens with lower scores, according to a study published Wednesday in the British Medical Journal Open.
원문출처 : http://www.cnn.com/2017/02/22/health/teens-smoking-drinking-study/index.html
원문출처 : http://www.cnn.com/2017/02/22/health/teens-smoking-drinking-study/index.html