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Article History

Received: 6 January 2020

Accepted: 3 March 2020

First Online: 12 March 2020

Compliance with ethical standards

:

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

: This article does not contain any studies with human participants or animals performed by any of the authors.

: 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.

: The local institutional review board approved the current prospective study. Informed consent was acquired from all of the participants’ parents.