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Authors
Fang, Xiaolian
Wang, Shengcai
Zhao, Junyang
Zhang, Yamei
Zhang, Jie
Li, Yanzhen
Li, Xiaodan
Tai, Jun http://orcid.org/0000-0003-3672-0125
Ni, Xin
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Funding
Funding for this research was provided by:
Beijing Hospitals Authority’ Ascent Plan (DFL20191201)
Capital Funds for Health Improvement and Research (2018-1-2091)
Beijing Hospitals Authority Youth Programme (QML20181202)
National Science and Technology Infrastructure Program (2017YFC0112502)
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Article History
Received: 28 September 2020
Accepted: 5 May 2021
First Online: 24 May 2021
Declarations
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: The study data was taken from the Surveillance, Epidemiology, and End Results database and did not involve interaction with human subjects or the use of personally identifiable information. The study did not require informed consent for SEER registration cases, and the author obtained a “limited use data agreement” from SEER. No trial registration was required.
: Not applicable.
: The author(s) declare(s) that there are no competing interests.
