27642
METHODS : This study aimed to evaluate the impact of RAI activities on the outcome of 225 DTC patients classified as intermediate risk , treated with low ( 1110 - 1850 MBq ) or high RAI activities ( >= 3700 MBq ) .
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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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