Liu, Liang
Li, Chuangui
Wang, Qiang
Yuan, Haibo
Wang, Yuanyuan
Article History
Received: 17 October 2022
Accepted: 23 December 2022
First Online: 2 February 2023
Declarations
:
: Since SEER is a publicly available database and all records have been deidentifed, no additional ethical approval or informed consent was required after the SEER Research Data Agreement was signed for accessing data. The study was carried out in accordance with the Helsinki Declaration.
: Not applicable.
: The authors have no conflicts of interest to declare.