1. NHC Key Laboratory of Male Reproduction and Genetics, Guangzhou 510600, P. R. China
2. Department of Gynecology, Family Planning Research Institute of Guangdong Province, Guangzhou 510600, P. R. China
3. Beogene Biotech (Guangzhou) Co., Ltd., Guangzhou 510663, P. R. China
4. Department of Center Laboratory, Family Planning Research Institute of Guangdong Province, Guangzhou 510600, P. R. China
5. Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Center for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, P. R. China