The 1 -, 2-and 3-year overall survival rate was 67. 2% , 38.7% , 27. 3% , respectively, in IFI group; versus 59. 7% , 25. 6% , 19. 2% in ENI group, with a difference significant in the 2-year overall survival rate between IFI and ENI group (P=0.048).

• 2、3年总生存率；IFI组分别为67.；2%25、38