1. Department of Biochemistry and Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi, China
2. Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
3. State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
4. Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA
5. Fertility Preservation Lab, Guangdong-Hong Kong Metabolism and Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510320, Guangdong, China