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The SphygmoCor device ( AtCor Medical , Sydney , Australia ) was used to measure HRV using SD of normal R - R interval ( SDNN ) , as well as AS , using pulse wave velocity in the carotid to femoral segment ( PWV - trunk ) and augmentation index adjusted to a heart rate of 75 bpm ( AIx75 ) .
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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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