14059
Prepubertal individuals were studied , including 41 controls and 17 hypospadias patients with mean ( SD ) ages of 4 . 7 ( 2 . 1 ) years and 4 . 0 ( 3 . 0 ) years , respectively .
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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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