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In our study , we have investigated the relationship of DHEA - S levels with anthropometric variables , insulin , HOMA , and free fatty acids in adolescents .
 Chemical: DHEA - S; Chemical: free fatty acids
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: DHEA - S; Chemical: free fatty acids