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Authors
Shen, Lin
Li, Jie
Pei, Kaiyan
Jiang, Xue
Jiang, Xiaomei
Zhang, Lina
Xu, Zhonglan
Zhang, Xiuqing
Chen, Lixia
Ren, Fengyan
Guo, Xiuling
Luo, Xiaowan
Qi, Qiwei
Ge, Jun
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Funding
Funding for this research was provided by:
the Non-profit Central Research Institute Fund of National Research Institute for Family Planning (No. 2021GJZ02 and No. 2023GJZD01)
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Article History
Received: 18 March 2026
Accepted: 2 July 2026
First Online: 10 July 2026
Declarations
Ethics approval and consent to participate: The study was approved by the Institutional Review Board of the National Research Institute for Family Planning (No. 2018-I2M-1-004) and registered on ClinicalTrials.gov (registration number: NCT04183829, date of registration: 28/11/2019). All participants provided informed consent prior to enrollment. Besides, the study was conducted by the Declaration of Helsinki, national guidelines, and laws.
Consent for publication: Not applicable.
Competing interests: The authors declare no competing interests.
