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The prevalence of AIS has been estimated to be one case in every 20 , 000 to 64 , 000 newborn males for the complete syndrome ( CAIS ) , and the prevalence is unknown for the partial syndrome ( PAIS ) .
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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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