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Article History

Received: 28 August 2018

Accepted: 5 December 2018

First Online: 14 December 2018

Ethics approval and consent to participate

: The study was commenced after obtaining the ethical approval by the Institutional Review Board at the Jordan University Hospital (Reference number: 65/2017). A written informed consent was obtained from all parents. In case of child 9 years and older an additional child assent was obtained.

: Not applicable.

: The authors declare that they have no competing interests.

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