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Following an oral glucose tolerance test , 20 individuals with normal glucose tolerance ( NGT ) and 20 IGT subjects were randomly selected from the ongoing PRAEDIAS prevention study in our department .
 Chemical: glucose; Chemical: glucose
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: glucose; Chemical: glucose