Bai, Jiuxu
Zhang, Xiaoling
Zhang, Aihong
Zhang, Yanping
Ren, Kaiming
Ren, Zhuo
Zhao, Chen
Wang, Qian
Cao, Ning
Article History
Received: 25 September 2021
Accepted: 12 January 2022
First Online: 22 January 2022
Declarations
:
: This research has been approved by the Ethics Committee of General Hospital of Northern Theater Command. Informed consent was waived by the Ethics Committee of General Hospital of Northern Theater Command due to the retrospective nature of the study. All methods were performed in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.