1. Center for Reproductive Medicine, Shandong University , Jinan 250012 , China
2. CAS Key Laboratory of Genome Sciences and Information, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, and China National Center for Bioinformation, Chinese Academy of Sciences , Beijing 100101 , China
3. University of Chinese Academy of Sciences , Beijing 100049 , China
4. CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, the Chinese University of Hong Kong , Hong Kong , China
5. Key Laboratory of Reproductive Endocrinology of the Ministry of Education, Shandong University , Jinan 250012 , China
6. Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200135 , China
7. CAS Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences , Kunming 650223 , China