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Baird DD, Saldana TM, Nepomnaschy PA, Hoppin JA, Longnecker MP, Weinberg CR, Wilcox AJ. Within-person variability in urinary phthalate metabolite concentrations: measurements from specimens after long-term frozen storage. Journal of Exposure Science & Environmental Epidemiology. 2009 Mar 11;20(2):169–75. doi: 10.1038/jes.2009.17. |