Xu, Wenpeng
Li, Xiucun
Cao, Songhua
Zhang, Ning
Hu, Yong
Article History
Received: 22 October 2021
Accepted: 3 December 2021
First Online: 20 December 2021
Declarations
:
: The experimental protocol was established, according to the ethical guidelines of the Helsinki Declaration and was approved by the Human Ethics Committee of the second hospital of Shandong university. Written informed consent was obtained from individual or guardian participants. Approval number:KYLL-2021LW1017.
: Not applicable. No informed consent was required, because the data are anonymized.
: The authors declare that they have no competing interests.