Document is current
Any future updates will be listed below
-
Authors
-
Funding
Funding for this research was provided by:
national natural science foundation (61977027)
hubei technological innovation special fund (2019AAA044)
- License Information
-
More Information
Article History
Accepted: 28 January 2022
First Online: 18 March 2022
Declarations
:
: All authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. We were unable to acquire ethics approval, because in China, there is still not any official national research ethics committee, and our institution haven’t established an institutional research ethics committee either.
: All parents of participating children gave informed, written consent for their children to take part in the study and be captured on video. The same consent was obtained from participating teachers as well. The teacher and the parent of the child in Fig. provided informed consent for publication of the images.
