Effects of Lowered Oxygen Concentration in Embryo Culture on the Outcomes of In Vitro Fertilization-Embryo Transfer for Elderly Women

YU Qiu-feng，WANG Hui-jie，CHEN Yan，JIA Xiao-li，ZHOU Xian-qiong，CHEN Ya-jun，HUANG Zhi-yong，GAO Song-cheng，FU Xue-wen，WANG Ai-ping

Journal of International Reproductive Health/Family Planning . 2018, (3): 205 -207 .