Funding for this research was provided by:
National Natural Science Foundation of China (81560443)
Scientific Research and Technology Development Program of Guangxi (20170109-22)
Natural Science Foundation of Guangxi Province (2018GXNSFAA138100)
Text and Data Mining valid from 2020-03-16
Received: 5 November 2019
Accepted: 2 March 2020
First Online: 16 March 2020
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Committee of Affiliated Hospital of Guilin Medical University, Nanxishan Hospital of Guangxi Zhuang Autonomous Region and Wuzhou Red Cross Hospital. All patients provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.