Article History
Received: 9 July 2023
Accepted: 20 August 2023
First Online: 30 August 2023
Declarations
:
: The authors declare that they have no confict of interest.
: This retrospective study was approved by the Medical Ethics Committee of the First Affiliated Hospital of Gannan Medical University and was conducted in accordance with the Declaration of Helsinki. All the patients were diagnosed and treated at the First Affiliated Hospital of Gannan Medical University, so we obtained permissions to access the data from tthe Medical Ethics Committee of the First Affiliated Hospital of Gannan Medical University. Considering theretrospective nature of the study, the informed consent was waived. The data used in this study were anonymised before its use.
: Not applicable.