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Authors
Hou, Guangdong
Li, Xi’an
Zheng, Yu
Liu, Pengfei
Yan, Fei
Ju, Dongen
Zhang, Geng
Zheng, Wanxiang
Gao, Ming
Hou, Niuniu
Yuan, Jiarui
Wang, Fuli
Yuan, Jianlin
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Funding
Funding for this research was provided by:
Natural Science Foundation of Shaanxi Provincial Department of Education (2014JM4184)
the Boost Program Research Project of Xijing Hospital (XJZT13Z05)
Military medical innovation project (16CXZ023)
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Article History
Received: 11 December 2019
Accepted: 30 March 2020
First Online: 2 May 2020
Compliance with ethical standards
:
: The authors declared no potential conflicts of interest with respect to the research, authorship, or publication of this article.
: All procedures performed in studies were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards, and with the ethical standards of the institutional and national research committee.
: The SEER database is an open database and information of patients was anonymous in the SEER database, so the current study do not require patients’ consent.
