1. Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
2. Department of Physiology and Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
3. Department of Pathology, Chinese PLA General Hospital, Beijing, China
4. Department of Histology and Embryology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
5. Department of Laboratory Medicine, No. 1 Hospital of China Medical University, Shenyang, China