Du, Yumeng
Jin, Chenqi
Jit, Mark
Chantler, Tracey
Lin, Leesa
Larson, Heidi J.
Li, Jing
Gong, Wenfeng
Yang, Fan
Ren, Nina
Cheng, Weibin
Zhou, Yi
Tang, Weiming
Tucker, Joseph D.
Wu, Dan
Article History
Received: 21 June 2022
Accepted: 9 March 2023
First Online: 13 April 2023
Declarations
:
: The Authors declare that there is no competing interest.
: We obtained ethical approval for the parent quasi-experimental study from the institutional review boards at the London School of Hygiene & Tropical Medicine (Ref: 19100) and the Zhuhai Center for Disease Control (approval number: 2020011). This secondary study was approved by the Research Ethics Committee of the London School of Hygiene and Tropical Medicine (Ref: 25292). All methods were carried out in accordance with relevant guidelines and regulations. Verbal consent to participate was obtained from all participants, including older adults and children’s parents or legal guardians who consented on behalf of their children. The verbal informed consent was approved by the Research Ethics Committee of the London School of Hygiene and Tropical Medicine.
: Not applicable.