6577
After adjustment of all other variables in multiple regression , the mean monthly EPO dosage was 19 . 00 +/- 8 . 59 mu g more in hypothyroid patients compared with euthyroid patients ( p = 0 . 027 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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