Funding for this research was provided by:
Natural Science Foundation of China, the Young Investigator Award (81300814)
Natural Science Foundation of China, the General program project (81470069)
Received: 17 April 2020
Accepted: 17 September 2020
First Online: 14 October 2020
Ethics approval and consent to participate
: The retrospective study protocol was reviewed and approved by the Ethics Committee of The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China (111), with waiver of informed consent for Chinese cohort. Informed patient consent was not required for data released by the SEER database.The publication of research details under the Creative Commons Attribution License 4.0.
: Not applicable.
: No conflict of interest exists in the submission of this manuscript. No conflict of interest exists in financial.