Received: 16 February 2023
Accepted: 16 April 2023
First Online: 6 May 2023
: The study was approved by the Medical Ethics Committee of the First Affiliated Hospital of the Air Force Medical University (KY20222320-C-1). All methods were implemented in accordance with the guidelines and regulations of the Committee. The need for written informed consent was waived by the Medical Ethics Committee of the First Affiliated Hospital of the Air Force Medical University due to the following reasons. This was a retrospective, non-intervention study that did not interfere with diagnosis and treatment, and there was no additional risk to patients. To protect patient privacy, clinical data was collected anonymously and our results do not contain any patient privacy information.
: Not applicable.
: The authors declare that they have no competing interests.