Hegazi, Mona Abdel-Fattah http://orcid.org/0000-0003-4940-0489
Saad, Aya Mohammed
Khodeir, Mona Sameeh http://orcid.org/0000-0003-3178-7777
Article History
Received: 26 October 2020
Accepted: 16 December 2020
First Online: 15 January 2021
Ethics approval and consent to participate
: Informed written consent was obtained from all parents of the children before enrollment in the study, and the study protocol has been approved by the Ain Shams Institute’s Ethical Committee of Human Research in March 2018. The committee’s reference number is not available.
: Not applicable.
: The authors declare that they have no competing interests.