27643
RESULTS : Six - eighteen months after ablation remission was observed in 60 . 0 % of patients treated with low and in 60 % of those treated with high RAI activities , biochemical disease was found in 18 . 8 % of patients treated with low and in 14 . 3 % of patients treated with high RAI activities , metastatic disease was found in 21 . 2 % of patients treated with low and in 25 . 7 % of patients treated with high RAI activities ( p = 0 . 56 ) .
 None
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:  
Answer:
 None