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Authors
Song, Jing-Yan http://orcid.org/0000-0002-2700-017X
Dong, Feng-Yi
Li, Li
Zhang, Xing-Xing
Wang, Ai-Juan
Zhang, Yi
Gao, Dan-Dan
Xiao, Ji-Mei
Sun, Zhen-Gao
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Article History
Received: 20 July 2021
Accepted: 25 August 2021
First Online: 30 August 2021
Declarations
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: This study was conducted in accordance with the Declaration of Helsinki. The study was approved by the Ethics Committees of all participating hospitals. All participants provided written informed consent. Furthermore, the study was approved by the Ethics Committee of Assisted Reproductive Medicine at the Affiliated Hospital of Shandong University of TCM (SDTCM/E2020.2.01).
: Written informed consent for publication was obtained from all participants.
: The authors declare no competing interests.
