7700
The perioperative mortality of all patients was 1 . 9 % , the mortality of patients older than 70 years was 4 . 3 % .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None