1. Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences Reproductive Science Institute Taiyuan China
2. State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology Chinese Academy of Sciences Beijing China
3. Department of Veterinary Pathobiology University of Missouri Columbia Missouri USA
4. Fertility Preservation Lab, Guangdong‐Hong Kong Metabolism & Reproduction Joint Laboratory, Reproductive Medicine Center Guangdong Second Provincial General Hospital Guangzhou China