Yang, Yingnan
Tu, Zhuolong
Ye, Chentao
Cai, Huajie
Yang, Shouzhang
Chen, Xuehai
Tu, Jinfu http://orcid.org/0000-0002-7718-2805
Article History
Received: 12 September 2020
Accepted: 17 January 2021
First Online: 23 January 2021
Ethics approval and consent to participate
: Ethics approval was waived by Ethics Committee of First Affiliated Hospital of Wenzhou Medical University, as SEER data is publicly available and without specific identifiers.
: Not applicable.
: The authors declare that they have no competing interests.