Liu, Xiaoyu
Liu, Zhaoyun
Li, Chao
Song, Xiang
Wang, Xinzhao
Li, Sumei
Yu, Zhiyong
Article History
Received: 28 June 2023
Accepted: 9 September 2023
First Online: 18 September 2023
Declarations
:
: This retrospective study was approved by the ethics committee of Shandong Frist Medical University and Shandong Academy of Medical Sciences (SDTHEC2022002006) and have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Not applicable.
: The authors declare no competing interests.