Zhao, Bei
Zhang, Wei
Li, Hao
Han, Liren
Han, Shizhang
Yang, Xiaofei
Yan, Jun
Mu, Weidong
Article History
Received: 23 November 2020
Accepted: 6 June 2021
First Online: 16 June 2021
Declarations
:
: This study has obtained ethics approval and consent of the ethics committee in Liaocheng People’s hospital (NO. 2019037). Due to the retrospective nature of the study, informed consent was waived.
: Not applicable.
: The authors declare that they have no conflict of interest.