1. Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
2. Jinan Maternal and Child Health Care Hospital, Shandong First Medical University, Jinan, Shandong, China
3. Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
4. Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
5. Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, Shandong, China