1473
The identification of the hepatitis C virus as the major cause of liver disease both in dialysis patients and in transplant patients has focused attention on the epidemiology and the impact of continuing infection in these patient groups .
 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