Affiliation: | 1. Department of Obstetrics &2. Gynaecology, First Affiliated Hospital of Xi’an Jiaotong University China , Xi’an, China;3. Gynaecology, First Affiliated Hospital of Xi’an Jiaotong University China , Xi’an, China https://orcid.org/0000-0003-4360-7278;4. The Hospital of Obstetrics &5. Gynaecology, Fudan University China , Shanghai, China |