Funding for this research was provided by:
Natural Science Foundation of Jiangsu Province (BK20141136, BK20151168)
National Natural Science Foundation of China (81500914, 81372598, 81772688, 81700794)
Science and Technology Support Program of Jiangsu Province (KYLX18_2169)
Priority Academic Program Development of Jiangsu Higher Education Institutions (2018 PAPD)
Text and Data Mining valid from 2019-04-04
Received: 18 December 2018
Accepted: 26 March 2019
First Online: 4 April 2019
Ethics approval and consent to participate
: The study was approved by the Ethical Committee for Xuzhou Medical University.
: Not applicable.
: The authors declare that they have no competing interests.
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