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Article History

Received: 1 November 2018

Accepted: 18 December 2018

First Online: 3 January 2019

Compliance with ethical standards

:

: The authors declared no potential conflict of interest with respect to the research, authorship, and/or publication of this article.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Informed consent was obtained from the parents of the child included in the study.