Funding for this research was provided by:
Received: 17 September 2020
Accepted: 7 April 2021
First Online: 1 May 2021
: Mahidol University Institutional Review Board (MUIRB) reviewed and approved this study (Certificate of approval No. 2015/333.2710). Participants 18 years and older provided written informed consents, and participants 13 to 17 years provided written informed assents. For participants who are younger than 18 years, additional written permission was obtained from either guardians or from homeroom teachers who acted as adult proxies. This additional process was informed by our previous study [CitationRef removed], reviewed and approved by the MUIRB.
: Not applicable.
: The authors have nothing to disclose.