Wang, Wenjun
Gao, Feng
He, Xuezhi
Gao, Yang
Shi, Lei
Liu, Wei
Zhuang, Xijing http://orcid.org/0000-0002-0805-6928
Article History
Received: 30 August 2022
Accepted: 16 February 2023
First Online: 21 February 2023
Declarations
:
: This study was granted exemption from ethic review by the Ethics Committee of Dalian Municipal Center Hospital (Ref No YN2022-010-01 February 15, 2022). The Ethics Committee of Dalian Municipal Central Hospital waived informed consent. The research was a retrospective study and used only existing collections of data that contain only non-identifiable data and is of negligible risk. The Ethics Committee of Dalian Municipal Central Hospital ensures that the data used in this study does not involve any patient privacy and only provides raw data to members of the study group. Research involving human data was performed following the Declaration of Helsinki.
: Not applicable.
: All authors declare that they have no competing interests.