Funding for this research was provided by:
National Natural Science Foundation of China (81472122, 81772398)
Received: 3 March 2019
Accepted: 28 February 2020
First Online: 12 March 2020
Ethics approval and consent to participate
: The study was approved by the institutional review board of the Third Affiliated Hospital of Sun Yat-sen University, and all subjects provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.