Wang, Tongbo http://orcid.org/0000-0003-2113-3681
Wu, Yan http://orcid.org/0000-0002-2355-0887
Zhou, Hong http://orcid.org/0000-0002-4172-3411
Wu, Chaorui http://orcid.org/0000-0002-4539-5363
Zhang, Xiaojie http://orcid.org/0000-0001-9850-9806
Chen, Yingtai http://orcid.org/0000-0003-3023-007X
Zhao, Dongbing http://orcid.org/0000-0002-6770-2694
Funding for this research was provided by:
Special Research Projects for Capital Health Development (2014-1-2151)
Beijing Hope Run Special Fund of Cancer Foundation of China (LC2017L01)
Article History
Received: 12 March 2020
Accepted: 17 January 2021
First Online: 26 January 2021
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College (Beijing, China). The SEER database is publicly available and provides de-identified case data. Because of the analysis used anonymous clinical data, written informed consent from subjects was waived.
: Not applicable.
: All authors declare no conflicts of interest related to this article.