Funding for this research was provided by:
Fok Ying Tong Education Foundation (141118)
National Natural Science Foundation of China (81370857)
Natural Science Foundation of Guangxi Province (2013GXNSFFA019002)
Guangxi science and technology project (GKG1598011-3)
Text and Data Mining valid from 2018-05-09
Received: 9 January 2018
Accepted: 26 April 2018
First Online: 9 May 2018
Ethics approval and consent to participate
: Medical Ethics Committee of First Affiliated Hospital of Guangxi Medical University approved the study protocol data collection, and written informed consent was obtained from each patient.
: The authors declare that they have no competing interests.
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