Article History
Received: 9 March 2022
Accepted: 13 October 2022
First Online: 3 November 2022
Declarations
:
: This single-institution retrospective study was approved by the Institutional Ethics Committee of the Second Xiangya Hospital of Central South University in accordance with the Declaration of Helsinki. Due to the retrospective nature of the present study and some of the patients had died, written informed consent was waived by the Institutional Ethics Committee of the Second Xiangya Hospital of Central South University. Instead, verbal informed consent was obtained from patients or their family members.
: N/A.
: The authors declare that they have no competing interests.