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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81673041)
Guangdong Natural Science Foundation of China (2017A030313760)
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Article History
Received: 13 November 2019
Accepted: 30 January 2020
First Online: 25 February 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: None declared.
: None declared.
: None declared.
: None declared.
: None declared.
: The funding organizations played no role in the design of study, choice of enrolled patients, review and interpretation of data, or preparation or approval of manuscript.
