Funding for this research was provided by:
Young Scientists Fund (grant numbers 81701518)
Received: 26 May 2020
Accepted: 22 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: Medical Ethics Committee of The Third Affiliated Hospital of Guangzhou Medical University approved the study.
: Not applicable.
: The authors declare that they have no competing interests.