The IIEF-5 scores of groups A , B and C were 10.13 + / - 1.55 , 11.00 + 1.60 and 10.73 + / - 1.91 before treatment , and 13.77 + / - 2.11 , 17.77 + / - 2.13 and 17.17 + / - 3.84 at 1 month after treatment , significantly higher in B and C than in A ( P < 0.001 ) , but with no remarkable difference between B and C ( P = 0.411 ) .