Article History
Received: 12 October 2022
Accepted: 2 March 2023
First Online: 27 March 2023
Declarations
:
: The CFPS study has been ethically approved by the Peking University Biomedical Ethics Review Committee (approval no. IRB00001052-14010), and all participants signed informed consent forms.
: The study uses a secondary source of data, and informed consent was obtained from all individual participants included in the survey while the survey data was collected.
: All authors agree to publish.
: The authors declare that they have no conflicts of interest.