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Authors
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Funding
Funding for this research was provided by:
the Science and Technology Plan of Panzhihua City in Sichuan Province of China (No.2017CY-C-1)
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Article History
Received: 1 March 2019
Accepted: 10 July 2019
First Online: 26 July 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
