Funding for this research was provided by:
Yayasan Tahija (The Tahija Foundation), Indonesia
Received: 13 July 2017
Accepted: 3 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: This trial protocol has been approved by the Universitas Gadjah Mada 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 aged between 13 and 17 years will be invited to sign an assent form indicating that they understand the research and agree to participate.
: The authors declare that they have no competing interests.
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