Funding for this research was provided by:
Graduate Research and Innovation Projects of Jiangsu Province (KYCX19 2066)
Priority Academic Program Development of Jiangsu Higher Education Institutions (03081023)
Received: 21 September 2020
Accepted: 22 December 2020
First Online: 9 January 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the Medical School of of Nantong University.
: All authors agree to publish this manuscript.
: The authors declare that they have no competing interests.