The results: The survival embryo rate is 95, 24% (200/210); the chemical pregnancy rate is 53, 85% (28/52); the implantation embryo rate is 18, 50% (37/200); the clinical pregnancy rate is 48, 08% (25/52); the ongoing pregnancy rate is 42, 30% (22/52) and the live birth rate is 34, 61% (18/52).