Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (2016SYS001)
National Key R&D Program of China (2018YFC2000601)
Text and Data Mining valid from 2019-04-15
Received: 28 October 2018
Accepted: 28 March 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: The research proposal was approved by the Institutional Review Board of Beijing Sport University (BSU IRB) and all participants gave written informed consent prior to study participation.
: Not applicable, no individual person’s data was presented.
: The authors declare that they have no competing interests.
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