Yu, Shun
Yan, Lihong
Yan, Junwei
Sun, Xiaozhi
Fan, Meixia
Liu, Huanhuan
Li, Yongxin
Guo, Mingjin
Article History
Received: 6 October 2022
Accepted: 19 December 2022
First Online: 28 January 2023
Declarations
:
: The research was approved by the Ethics Committee of the Affiliated Hospital of Qingdao University. Since the study data were provided by the Scientific Research Big Data Platform from our medical center, written informed consent was not obtained from the participants.
: Not applicable.
: The authors have no conflicts of interest.