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Article History

Received: 31 March 2018

Accepted: 24 September 2018

First Online: 29 September 2018

Ethics approval and consent to participate

: All authors hereby declare that all experiments have been examined and approved by the Ethics Committee of the Faculty of Medicine, Universitas Indonesia (No 783/UN2.F1/ETIK/2016) and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. A written informed consent was provided by the parents of the children involved in the study.

: Not applicable.

: The authors declare that they have no competing interests.

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