1. Department of Obstetrics and Gynecology; The First Affiliated Hospital of Nanjing Medical University; Nanjing Jiangsu Province China
2. Department of Obstetrics, Gynecology & Reproductive Sciences; Yale Stem Cell Center, Yale University School of Medicine; New Haven CT USA
3. Department of Oncology; The Second Affiliated Hospital, Nanjing Medical University; Nanjing Jiangsu Province China
4. Department of Anatomy, Histology and Embryology; The Research Center for Bone and Stem Cells, Nanjing Medical University; Nanjing Jiangsu Province China
5. Department of Obstetrics and Gynecology; Center for Reproductive Medicine, Peking University Shenzhen Hospital; FuTian District, Shenzhen Guangdong China