Funding for this research was provided by:
Science and Technology Bureau of Nanning, Guangxi, China (20143163)
Text and Data Mining valid from 2019-04-11
Received: 13 December 2018
Accepted: 25 March 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: The protocol of prospective study was approved by the Ethics Committee of The 3rd Affiliated Hospital of Guangxi Medical University (Protocol number KYXM201301), and we obtained written informed consent from all participants involved in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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