Yang, Zhen-Guo
Sun, Xu
Han, Xue
Wang, Xiao
Wang, Lei
Funding for this research was provided by:
the Special Funds for Clinical Research on Umbilical Cord Blood of Shandong Medical Association (No. YXH2021ZX061)
Article History
Received: 27 June 2024
Accepted: 30 December 2024
First Online: 10 January 2025
Declarations
:
: All participants provided written informed consent, and the Research Ethics Review Board of the National Center for Health Statistics approved the study. The experimental procedures adhered to the ethical guidelines of the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.