Body length at NOS Spearman´s rho P-value All infants (N=498) Male (N=267) Female (N=231) All infants (N=498) Male (N=267) Female (N=231) Mercury 0.052 0.009 0.064 0.426 0.885 0.332 HCB 0.003 -0.009 0.006 0.945 0.882 0.928 b-HCH -0.035 -0.046 -0.003 0.431 0.458 0.969 PCB-118 0.054 0.032 0.089 0.226 0.604 0.178 PCB-153 0.011 -0.018 0.052 0.813 0.765 0.436 PCB-105 0.062 0.043 0.093 0.170 0.486 0.160 PCB-138 0.032 -0.004 0.078 0.476 0.950 0.236 PCB-156 0.002 -0.041 0.053 0.970 0.504 0.421 PCB-180 0.015 -0.013 0.049 0.736 0.832 0.461 SPCB 0.017 -0.014 0.059 0.698 0.816 0.371 Sum of three mono-ortho PCB (105+118+156) 0.045 -0.017 0.085 0.316 0.779 0.199 4,4’-DDT 0.020 0.021 0.023 0.659 0.727 0.724 4,4’-DDE 0.001 -0.017 0.027 0.981 0.782 0.682 Trans-nonachlor      0.039 0.021 0.057 0.379 0.738 0.387