Funding for this research was provided by:
National Natural Science Foundation of China (82060577, 81760566)
Article History
Received: 11 August 2021
Accepted: 9 September 2021
First Online: 20 September 2021
Declarations
:
: This study was based on public use data from the SEER database. The study did not require informed consent from the SEER registered cases, and the authors obtained Limited-Use Data Agreements from SEER.
: Not applicable.
: The authors declare that they have no competing interests.