Until 2005, the percentage of u.s. adults who smoked drop; since this date have the jammed around 20% to 21%. According to CDC's (Centers for Disease Control and Prevention 's) morbidity and mortality weekly report, 54% of 3 to 11 year old children were exposed to secondhand smoke during 2007-2008, while 40% of non-smokers of all ages have been exposed to passive smoking ...
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