Confounding factor unaddressed in the research:
Blacks smoke menthol cigarettes, while whites smoke non-menthol (by and large).
Blacks smoke menthol cigarettes, while whites smoke non-menthol (by and large).
It's not addressed in this news release. The article does not appear on PubMed yet from an author search. E. T. Moolchan's last article is 2005 Nov 19.