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Authors
Liu, Yuanyuan
Wu, Shafei
Shi, Xiaohua
Liang, Zhiyong
Zeng, Xuan https://orcid.org/0000-0002-8711-753X
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Funding
Funding for this research was provided by:
National Key Research and Development Program of China (2017YFC1309004)
Chinese Academy of Medical Sciences (CAMS) Initiative for Innovative Medicine (2017-I2M-1-005)
CAMS Innovation Fund for Medical Sciences (2019-I2M-2-002)
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Article History
Received: 25 December 2019
Accepted: 22 February 2020
First Online: 3 March 2020
Compliance with ethical standards
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: All authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The retrospective study was approved by the institutional review board of Peking Union Medical College Hospital with a waiver for the need to obtain informed consent.
