Li, Jia
Yu, Yahang
Hei, Luping
Yuan, Beibei
Article History
Received: 24 April 2022
Accepted: 18 January 2023
First Online: 27 January 2023
Declarations
:
: The study has been approved by the Ethics Review Board of the School of Public Health, Peking University (code of ethics: PKU201412128). Informed consent was obtained from all participants before questionnaire administration. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declared no potential conflicts of interest.