501
In simple longitudinal lengthening , the rate of distraction is equal at any point of the corticotomy , however , the rate of distraction at any given portion of the corticotomy varies during angular correction .
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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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