Funding for this research was provided by:
National Natural Science Foundation of China (81872264)
Article History
Received: 27 March 2023
Accepted: 13 May 2023
First Online: 23 May 2023
Declarations
:
: This study follows the principles of the Declaration of Helsinki. The need for informed consent was eliminated since the SEER (Surveillance, Epidemiology, and End Results) database is freely accessible online.
: Not applicable.
: The authors declare no competing interests.