Funding for this research was provided by:
Research Institute of Rangsit University
Received: 21 May 2020
Accepted: 15 September 2020
First Online: 30 September 2020
Ethics approval and consent to participate
: The project were approved by the Ethical Committee of Research Institute of Rangsit University (RSEC 28/2560 issued on 1 October 2017), Thailand. Parents or legal guardian of the children received written informed consent about the study via the school administration, and they could opt out if they disagreed with their child’s participation. Participation in the study was fully voluntary and confidential with no explicit incentives provided for participation.
: Not Applicable.
: The authors declare that they have no competing interest.