Funding for this research was provided by:
the Innovation Project of Guangxi Graduate Education (YCBZ2018038)
Medical Excellence Award Funded by the Creative Research Development Grant from the First Affiliated Hospital of Guangxi Medical University
Guangxi Medical University Training Program for Distinguished Young Scholars
Innovation Project of Guangxi Graduate Education (YCBZ2019041)
Received: 9 March 2019
Accepted: 18 August 2019
First Online: 23 August 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the First Affiliated Hospital of Guangxi Medical University.
: Not applicable.
: The authors declare that they have no competing interests.