Funding for this research was provided by:
National Natural Science Foundation of China (81660528)
Guangxi Science and Technology Development Project (14124005-2-11)
Text and Data Mining valid from 2018-08-02
Received: 16 November 2017
Accepted: 5 July 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Guangxi Medical University. The data analyzed in this study were anonymized for confidentiality.
: Not applicable.
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