23701
The prevalence of GO varies in different published series of Graves ' patients , due to confounding factors ( new diagnosis vs . long - lasting disease , way of defining and assessing ocular involvement , treatment of hyperthyroidism with potentially GO - modifying treatments , such as radioiodine ) .
 Chemical: radioiodine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: radioiodine