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Variability of urinary concentrations of non-persistent chemicals in pregnant women and school-aged children
A B S T R A C T Background: Exposome studies are challenged by exposure misclassification for non-persistent chemicals, whose temporal variability contributes to bias in dose-response functions. Objectives: We evaluated the variability of urinary concentrations of 24 non-persistent chemicals: 10 phthalate metabolites, 7 phenols, 6 organophosphate (OP) pesticide metabolites, and cotinine, between weeks from different pregnancy trimesters in pregnant women, and between days and between seasons indoi:10.1016/j.envint.2018.09.046 fatcat:6abdjgfqrbhgfmgpe4ubomfq2u