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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.
Biochemical verification of tobacco use and cessation.
SRNT Subcommittee on Biochemical Verification. SRNT Subcommittee on Biochemical Verification. Nicotine Tob Res. 2002 May;4(2):149-59. doi: 10.1080/14622200210123581. Nicotine Tob Res. 2002. PMID: 12028847 No abstract available.