Funding for this research was provided by:
the National Natural Science Foundation of China (81901699, 81773051, 81572409)
Guangdong Medical Science and Technology Research Fund (C2018063)
Received: 8 December 2020
Accepted: 17 April 2022
First Online: 6 May 2022
: This study was approved by the Institutional Review Board of Sun Yat-sen University Cancer Center, and complied with the 2016/679 General Regulation on Personal Data Protection regarding the use of anonymised population data. As the current study was a retrospective assessment of routine data, the ethics committee of our Cancer Center waived the need for individual informed consent.
: Not applicable.
: The authors declare that they have no competing interests.