519
This reveals a new test for short saphenous incompetence and shows that 14 per cent of varices stem from a saphenopopliteal reflux .
 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