453
Median overall survival time was 10 . 2 months [ 95 % confidence interval ( CI ) : 8 . 7 - 11 . 6 ] , and median progression - free survival time was 7 . 6 months ( 95 % CI : 4 . 4 - 10 . 9 ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 None