Funding for this research was provided by:
Natural Science Foundation of Qinghai (2019-ZJ-929)
Article History
Received: 22 September 2021
Accepted: 22 November 2022
First Online: 6 December 2022
Declarations
:
: and consent to participate:This study was a retrospective study.This study conformed to the ethical guidelines of the 1975 Declaration of Helsinki as reflected in approval by the Ethics Committee of Beijing Anzhen Hospital,Capital Medical University (2015-43) for our team to access the clinical/personal patient data used in our research. Written informed consent was obtained from all participants before this study.
: Not applicable.
: The authors declare that they have no competing interests.