Liu, Jiameng
Zheng, Xiaobin
Lin, Shunguo
Han, Hui
Xu, Chunsen
Article History
Received: 21 September 2021
Accepted: 20 January 2022
First Online: 29 January 2022
Declarations
:
: The study was conducted in accordance with the Declaration of Helsinki (as revised in 2013). We have obtained permission to access research data files in the SEER program of the National Cancer Institute (reference number 10727-Nov2020). The analysis dataset was extracted without any identifiable information. Thus, informed consent has been waived. Ethical approval was exempt from review by the Ethics Committee of Fujian Medical University Union Hospital, as SEER database is publicly available and without specific identifiers.
: Not applicable.
: The authors declare that they have no competing interests.