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Article History

Received: 28 November 2018

Revised: 23 February 2019

Accepted: 4 March 2019

First Online: 20 March 2019

Compliance with ethical standards

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by Clinical Research Ethics Board (Registration Number: 29/12/2017-108).

: The authors declare that they have no conflict of interest.

: Written informed consent was obtained from all parents’ individual participants included in the study.