Article History
Received: 21 August 2021
Accepted: 3 February 2022
First Online: 2 March 2022
Declarations
:
: All participants signed an informed consent form before the survey. This study has been approved by the Medical Ethics Committee of Xiangya School of Public Health, Central South University (identification code: XYGW-2020-101).
: Not applicable.
: The authors declare that they have no competing interests.