1. Department of Obstetrics and Gynecology, Reproductive Medicine Center, the First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
2. School of Medicine, Tsinghua University, Beijing 100084, China
3. Department of Chemistry, Tsinghua University, Beijing 100084, China
4. Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
5. NHC Key Laboratory of study on abnormal gametes and reproductive tract, Anhui Medical University, Hefei 230032, China
6. Tsinghua-Peking Center for Life Sciences, Beijing 100084, China
zzg_100@163.com (Z. Zhang)
linlithu@ccmu. edu.cn (L. Li)
caoyunxia6@126.com (Y. Cao)
jie.na@tsinghua. edu.cn (J. Na)
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