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Environmental tobacco smoke and canine urinary cotinine level.
Bertone-Johnson ER, Procter-Gray E, Gollenberg AL, Ryan MB, Barber LG. Bertone-Johnson ER, et al. Environ Res. 2008 Mar;106(3):361-4. doi: 10.1016/j.envres.2007.09.007. Epub 2007 Oct 22. Environ Res. 2008. PMID: 17950271 Free PMC article.