Figure 1From: A cohort study of the association between secondary sex ratio and parental exposure to polybrominated biphenyl (PBB) and polychlorinated biphenyl (PCB) Relationship between parents' serum log-transformed PBB and log-transformed PCB concentrations (N = 300 offspring). Spearman correlation coefficients: PBB, rs = 0.64; PCB, rs = 0.19.Back to article page