Funding for this research was provided by:
National Natural Science Foundation of China (81802262)
Fundamental Research Funds for the Central Universities (22120180584)
Received: 15 April 2020
Accepted: 17 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: This research including formal consent was exempt by the ethics committee of the 10th People’s Hospital affiliated to Tongji University. All the data in the article was from SEER database, which was publicly available, and we received permission for using the data on non-commercial use.
: Not Applicable.
: The authors declare no potential conflicts of interest related to this study.