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WASHINGTON Senators on Wednesday blasted top health and law enforcement officials for not doing more to combat the rise of illegal electronic cigarettes in the U.S., a multibillion-dollar business that has flourished amid haphazard enforcement

All participants in the KNHANES survey signed an informed consent

The thickness, length, and also tension of the vocal cords establish the pitch of the voice

Using data from the General Household Survey for 2008, we may obtain the prevalence of current, ever or never smokers by age group, as well as the probability of being married or cohabiting currently or ever in the past