GNRH1 and ovarian hyperstimulation syndrome: In view of the advantages and disadvantages of hCG and GnRH-a trigger, this study intends to analyze the dual trigger protocol of GnRH-a and hCG in COH scheme, to explore the effect of GnRH-a trigger with different doses of hCG on assisted reproductive pregnancy outcome and the incidence of OHSS in the females with high ovarian response.