Yu, Huifang
Sun, Siwen
Ling, Jie
Chen, Haixiao
Liu, Guilin
Article History
Received: 14 October 2022
Accepted: 6 March 2023
First Online: 10 March 2023
Declarations
:
: The questionnaire employs data anonymization to ensure the confidentiality of enrollees. Written informed consent was obtained from each participant. This study was approved by the Research Ethics Committee of the Zhejiang Provincial Center for Disease Control and Prevention. All procedures comply with the principles of the Declaration of Helsinki.
: Not Applicable.
: The authors declare no competing interests.