Funding for this research was provided by:
Ministry of Research and Technology/National Agency for Research and Innovation, Indonesia
Received: 14 May 2020
Accepted: 28 September 2020
First Online: 2 October 2020
Ethics approval and consent to participate
: This study was approved by the Medical and Health Research Ethics Committee of the Faculty of Medicine, Universitas Gadjah Mada/Dr. Sardjito Hospital (KE/FK/1356/EC/2015 and KE/FK/787/EC/2015). All parents signed a written informed consent before joining this study.
: Not applicable.
: The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.