Fig. 1From: Serum levels of hydroxylated PCBs, PCBs and thyroid hormone measures of Japanese pregnant womenScatter plot of subject’s age and serum OH-PCBs concentration (sum of 16 isomers). Correlation between age and OH-PCBs for primiparous subjects was 0.343 (p = 0.007) and that for multiparous subjects was 0.517 (p < 0.001)Back to article page