Shou, Jiafeng
Zhang, Qi
Zhang, Dahong
Funding for this research was provided by:
Medicine and Health Research Foundation of Zhejiang Province (201506257)
China National Natural Science Foundation (81502541)
Article History
Received: 10 February 2021
Accepted: 3 May 2021
First Online: 24 May 2021
Declarations
:
: We signed the ‘Surveillance, Epidemiology, and End Results Program Data-Use Agreement’ in accordance with the requirement of using SEER database. Therefore, we obtained the data using permission and could download data from the SEER database.