| Affiliation: | 1. Reproductive Center, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, Jingzhou, China;2. Department of Gynecology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China;3. Cervical Disease Clinic, Jiangsu Huai'an Maternity and Children Hospital, Huai'an, China;4. Department of Obstetrics and Gynecology, Shanghai Jiaotong University Affiliated Six People's Hospital, Shanghai, China |
