Elrefaie, Dina Ahmed http://orcid.org/0000-0002-1007-8413
Hegazi, Mona Abd El-Fattah http://orcid.org/0000-0003-4940-0489
El-Mahallawi, Marwa Mohammed
Khodeir, Mona Sameeh http://orcid.org/0000-0003-3178-7777
Article History
Received: 2 January 2021
Accepted: 18 March 2021
First Online: 1 May 2021
Declarations
:
: Informed written consent was obtained from all parents of the children before enrolment in the study, and the study protocol has been approved by the Ain Shams Institute’s Ethical Committee of Human Research in October 2017. The committee’s reference number is not available.
: Not applicable.
: The authors declare that they have no competing interests.