Funding for this research was provided by:
National Natural Science Foundation of China (81873575)
Article History
Received: 20 August 2019
Accepted: 27 November 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: This study was approved by Ethics Committee of Xiangya Hospital of Central South University and all subjects provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.