Funding for this research was provided by:
Third Affiliated Hospital of Guangzhou Medical University Youth Fund (2018Q19 and 2019Q2)
Received: 19 October 2020
Accepted: 25 January 2021
First Online: 11 February 2021
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of the thirdAffiliated Hospital of Guangzhou Medical University.
: Not applicable.
: The authors declare no conflicts of interest.