Funding for this research was provided by:
Key Scientific Research Projects for Medicine and Health of Guangxi Zhuang Autonomous Region (Emphasis 2010029 and S2018026)
Chinese Government Scholarship (2018018180151)
Received: 4 February 2020
Accepted: 5 June 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: This study has obtained ethics approval and consent of the ethics committee in our hospital (no. 2016-12).
: Not applicable.
: All authors have no conflicts of interest to report.