| Affiliation: | 1. Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China;2. Department of Gynecology and Obstetrics, Northern Jiangsu Province Hospital, Clinical Medical College, Yangzhou University, Jiangsu, China;3. Faculty of Reproductive Medical Center of the Third Hospital, Zhengzhou University, Zhengzhou, Henan, China;4. Department of Reproductive Medical Center, Tangdu Hospital, The Fourth Military Medical University, xi'an, China;5. Faculty of Department of Orthopedics, Pu Ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China |
