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. 2015 Oct 9;15:1035. doi: 10.1186/s12889-015-2379-9

Fig. 2.

Fig. 2

Cluster overlay for Cd and Pb. The white contour line represents the area of the highest probably of Cd clustering, while the black contour lines represent the highest probability of Pb clustering. The overlapping areas indicate high probability of both Pb and Cd clustering