Abstract:INTRODUCTION This study sought to quantify the difference in serum cotinine and other biomarkers indicative of cigarette smoking in current US cigarette smokers attributable to brand level versus individual level factors. METHODS A total of 2,558 daily exclusive smokers, 20 years and older in the United States participated in the National Health and Nutrition Examination Surveys 2007-2012 and provided biospecimens and cigarette brand information. Biomakers of interest were serum cotinine, and urinary NNAL, PA… Show more
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