Funding for this research was provided by:
Received: 29 March 2020
Accepted: 5 May 2020
First Online: 25 May 2020
Ethics approval and consent to participate
: This trial protocol has been approved by the Universitas Gadjah Mada (UGM) ethics committee (approval number KE/FK/105/EC/2016) and Monash University Human Research Ethics Committee (approval number 0960). Written informed consent will be obtained from participants (or their guardian where the participant is a minor). In addition, participants between 13 and 17 years of age will be invited to sign a consent form indicating that they understand the research and agree to participate.
: Not applicable.
: The authors declare that they have no competing interests.