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Authors
Mira, Marwa Farouk http://orcid.org/0000-0002-1930-6742
Anwar, Ghada Mohammad
Sarry EL-Din, Azza Mohamed
Megahed, Safinaz Mohammed
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Article History
Received: 10 June 2019
Accepted: 29 November 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: Informed written consent was taken from all participants and their parents after full explanation of the purpose and nature of all procedures used, and the study was approved by Medical Research Ethics Committee, National Research Centre number: 13-069.
: Not applicable
: The authors declare that they have no competing interests.
