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. 2014 Dec 1;9(12):e113297. doi: 10.1371/journal.pone.0113297

Figure 1. Figure 1 showed that the blood lead level of this survey was significantly lower than the blood lead level of 1997.

Figure 1

This survey showed that the Chongming district was the highest and Yangpu district was the lowest. 1997's survey showed that Yangpu district was the highest among all the five districts, and the Chongming district was the lowest.