Funding for this research was provided by:
the research start-up fee for the Eighth Affiliated Hospital, Sun Yat-sen University (zdbykyqdf005)
National Key Researchand Development Program of China (2018YFA0902801)
Received: 30 July 2019
Accepted: 18 May 2021
First Online: 29 May 2021
: The present study, the data download from Surveillance Epidemiology and End Results database and The Cancer Genome Atlas (TCGA) database, therefore, this article does not contain any studies with human participants or animals performed by any of the authors. Thus no ethical approval and patient consent are required. This article does not contain any studies with animals performed by any of the authors.
: Not applicable.
: All authors declare that they have no conflict of interest to state.