5446
Salivary gland function 5 years after radioactive iodine ablation in patients with differentiated thyroid cancer : direct comparison of pre - and postablation scintigraphies and their relation to xerostomia symptoms .
 Chemical: radioactive iodine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: radioactive iodine 
Answer:
 Chemical: radioactive iodine