Comparing the effect of Combination therapy (Li-ESWT combined with PDE5-inhibitor) vs SIngle therapy (PDE5-inhibitor) in mild to moderate Erectile Dysfunction patients.~Parameters used for comparation are EHS score, IIEF-5 score, VEGF level and PSV
to compare the effect of combination of li-eswt and pde-5 inhibitor to pde-5 alone in erectile dysfunction patients