14638
In 10 subjects who were followed for at least 7 days postoperatively , intact FGF23 ( iFGF23 ) decreased to near undetectable within hours and returned to the normal range within 5 days .
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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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