1830
RESULTS : The mean Rentrop collateral score was higher in Group 1 than in Group 2 ( 2 . 39 + / - 1 . 07 vs . 1 . 76 + / - 0 . 76 , respectively , p less than 0 . 001 ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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