AIM: To observe the treatment effect of metformin(MTF)on clomiphene(CC)-resistant infertile patients with polycystic ovary syndrome(PCOS).

• 目的:探讨二甲双胍(MTF)治疗多囊卵巢综合征(PCOS)不孕患者克罗米酚(CC)抵抗的效果。