Funding for this research was provided by:
The Research Institute of Science and Technology for Society of the Japan Science and Technology Agency (JPMJRX17A1)
The Research Institute of Science and Technology for Society of the Japan Science and Technology Agency (JPMJRX20IA)
Article History
Received: 11 November 2021
Accepted: 24 January 2022
First Online: 3 February 2022
Declarations
:
: The study was conducted with the approval of the Institutional Review Board of the authors’ university (201904 for Study 1 and 202012 for Study 2).
: Written informed consent was obtained from the principals of each school. Only data obtained through the opt-out consent process from the children were used.
: The authors declare that they have no conflict of interest.