Funding for this research was provided by:
Natural Science Foundation of Beijing (9202007, 9202007, 9202007)
Received: 4 June 2022
Accepted: 22 August 2023
First Online: 2 September 2023
: The study has been approved by the Ethics Review Board of the School of Public Health, Peking University. Informed consent was obtained from all participants prior to questionnaire administration. All methods were carried out in accordance with relevant guidelines and regulations under ethics approval and consent to participate.
: Not applicable.
: The authors declare no competing interests.