Funding for this research was provided by:
University Natural Science Research Project of Anhui Province (1808085QH239)
Received: 3 January 2020
Accepted: 13 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of the First Affiliated Hospital Ethics Committee of USTC (2019-P-013). We obtained written informed consent from all participants regarding the aims, contents, and procedures of the study.
: Not applicable.
: The authors declare that they have no competing interests.