26685
Eighteen with hyperthyroidism ( Group1 ) , 22 hypothyroidism ( Group2 ) , 45 Hashimoto ' s thyroiditis ( Group3 ) , 19 nodular goiter ( Group4 ) underwent thyroid function evaluation and sonography .
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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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