Funding for this research was provided by:
National Natural Science Foundation of China (31671144)
Hunan Provincial Natural Science Foundation of China (2019JJ40362)
Chinese Ministry of Education’s Humanities and Social Science Research Project (13YJA190015)
The Research Foundation of the Education Commission of Hunan Province (2017jy77)
the Fundamental Research Funds for the Central Universities of Central South University (2020zzts284)
Received: 19 July 2020
Accepted: 31 January 2021
First Online: 17 February 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of Second Xiangya Hospital, Central South University. All participants were over 18 years old and had written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.