Received: 13 July 2020
Accepted: 17 August 2020
First Online: 1 September 2020
Ethics approval and consent to participate
: Approval was obtained from the research ethics committee of Mongolian National University of Medical Sciences (MNUMS).School managers and teachers at each selected school agreed to participate. Prior verbal consent was obtained from each participating child or adolescent in accordance with the terms of ethics approval.
: Not applicable.
: TJS is a Director and Trustee of <i>Lifting The Burden</i>. Otherwise, no author declares a conflict of interest.