Objective To study the effect of oral contraceptive pills(OCP) administered before the stimulation cycle on poor responder patients undergoing in vitro fertilization-embryo transfer(IVF-ET) cycles.

• 目的研究促排卵周期前应用口服避孕药(OCP)对体外受精-胚胎移植术(IVF-ET)中卵巢反应不良者的意义。