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The main topics of the 7th Workshop were knowledge on the fate of anomalies after birth , use of Version 2 terminology for maternal - fetal observations and non - routinely used species , reclassification of " grey zone " anomalies and categorization of fetal observations for human health risk assessment .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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