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Reproducibility of the nicotine metabolite ratio in cigarette smokers.
St Helen G, Novalen M, Heitjan DF, Dempsey D, Jacob P 3rd, Aziziyeh A, Wing VC, George TP, Tyndale RF, Benowitz NL. St Helen G, et al. Cancer Epidemiol Biomarkers Prev. 2012 Jul;21(7):1105-14. doi: 10.1158/1055-9965.EPI-12-0236. Epub 2012 May 2. Cancer Epidemiol Biomarkers Prev. 2012. PMID: 22552800 Free PMC article. Clinical Trial.
Dose-independent kinetics with low level exposure to nicotine and cotinine.
Benowitz NL, Dempsey D, Tyndale RF, St Helen G, Jacob P 3rd. Benowitz NL, et al. Among authors: st helen g. Br J Clin Pharmacol. 2013 Jan;75(1):277-9. doi: 10.1111/j.1365-2125.2012.04327.x. Br J Clin Pharmacol. 2013. PMID: 22574797 Free PMC article. Clinical Trial. No abstract available.
Biomarkers of secondhand smoke exposure in automobiles.
Jones IA, St Helen G, Meyers MJ, Dempsey DA, Havel C, Jacob P 3rd, Northcross A, Hammond SK, Benowitz NL. Jones IA, et al. Among authors: st helen g. Tob Control. 2014 Jan;23(1):51-7. doi: 10.1136/tobaccocontrol-2012-050724. Epub 2013 Jan 24. Tob Control. 2014. PMID: 23349229 Free PMC article.
Nicotine and carcinogen exposure after water pipe smoking in hookah bars.
St Helen G, Benowitz NL, Dains KM, Havel C, Peng M, Jacob P 3rd. St Helen G, et al. Cancer Epidemiol Biomarkers Prev. 2014 Jun;23(6):1055-66. doi: 10.1158/1055-9965.EPI-13-0939. Epub 2014 May 16. Cancer Epidemiol Biomarkers Prev. 2014. PMID: 24836469 Free PMC article.
52 results