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The PON1 Q192R polymorphism was significantly associated with a lower risk of bleeding events [ odds ratio ( OR ) 0 . 61 , 95 % confidence interval ( CI ) 0 . 43 - 0 . 87 , adjusted P = 0 . 0066 ) .
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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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