Endometrial scratch for infertile polycystic ovary syndrome (PCOS) women undergoing laparoscopic ovarian drilling: a randomized controlled trial

Background Women with polycystic ovarian syndrome (PCOS) may undergo laparoscopic ovarian drilling (LOD). To find out whether endometrial scratch, at time of LOD, could improve live birth rate in subfertile women with PCOS, a randomized controlled trial was conducted.