Ding, Jun-zhe
Kong, Chao
Li, Xiang-yu
Sun, Xiang-yao
Lu, Shi-bao
Zhao, Guo-gunag
Funding for this research was provided by:
National Natural Science Foundation of China (No.81672201, 81871794)
Beijing Municipal Commission of Health and Family Planning (PXM2017 026283 000002)
Article History
Received: 7 October 2020
Revised: 20 October 2021
Accepted: 7 November 2021
First Online: 3 January 2022
Declarations
:
: There are no conflicts of interest for the current study.
: This study has been approved by the Center’s Medical Ethics Committee.
: All parties participated are fully aware of the confidentiality of the Helsinki Declaration.
: Written informed consent for publication was obtained from all participants.