Wang, Huan
Cousineau, Claire
Fan, Yingjie
Dill, Sarah-Eve
Boswell, Matthew
Rozelle, Scott
Ma, Xiaochen http://orcid.org/0000-0002-8251-3373
Funding for this research was provided by:
onesight foundation
Article History
Received: 12 July 2021
Accepted: 28 January 2022
First Online: 19 February 2022
Declarations
:
: The trial was approved by the Stanford University Institutional Review Board (Protocol No. ISRCTN03252665. Permission was received from local Boards of Education in each region and from the principals of all schools. The principles of the Declaration of Helsinki were followed throughout. Written informed consent was obtained from at least one parent for all child participants.
: Not applicable.
: The authors declare that they have no competing interests.