Funding for this research was provided by:
National Natural Science Foundation of China (81802600)
Natural Science Foundation of Fujian Province (2020J011240)
the Science and Technology Planning Projects of Xiamen Science & Technology Bureau (3502Z20184016)
the Baise City Scientific Research and Technology Development Plan (20183008)
the Social Science and Technology Development Major Project of Dongguan (2018507150241630)
Received: 4 January 2021
Accepted: 13 May 2021
First Online: 25 May 2021
: This study was approved by the Institutional Review Board of the the First Affiliated Hospital of Xiamen University (Approval number: 81802600).
: Not applicable.
: The authors declare that there are no conflicts of interest.