Li, Jianjie
Zheng, Qiwen
Zhao, Xinghui
Zhao, Jun
An, Tongtong
Wu, Meina
Wang, Yuyan
Zhuo, Minglei
Zhong, Jia
Yang, Xue
Jia, Bo
Chen, Hanxiao
Dong, Zhi
Wang, Jingjing
Chi, Yujia
Zhai, Xiaoyu
Wang, Ziping
Funding for this research was provided by:
Science Foundation of Peking University Cancer Hospital (18-02, 2017–18)
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (PX2019038)
Article History
Received: 19 September 2019
Accepted: 7 August 2020
First Online: 24 August 2020
Ethics approval and consent to participate
: The study was exempted from ethical review by the Beijing Cancer Hospital. We obtained the data agreement and downloaded the files directly from the SEER website in accordance with SEER requirements. The reference number was 15586-Nov2016.
: Not applicable.
: The authors declare that they have no competing interests.