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Figure 2 shows a comparison of the mean PCDD / PCDFs TEQ levels in Chapaevsk boys with other populations ( TEQ from dioxin - like PCBs was not included , since some of these studies did not report them ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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