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Spearman correlation coefficients between levels of Mn biomarkers. Abbreviations: bld = blood; dent = dentin; enam = enamel; ur = urine; 2nd = 2nd trimester; 3rd = 3rd trimester; pre = prenatal; post = postnatal; del = delivery; cord = cord blood; 26w = 26 weeks gestation; 24m = child 24 months of age.
