Article History
Received: 17 March 2021
Accepted: 28 May 2021
First Online: 28 July 2021
Declarations
:
: Approval was obtained from the Institutional Review Boards (IRB) of the Menoufia Faculty of Medicine under the number 3-2020 ENT and following the Declaration of Helsinki. After an explanation of all aspects of the study and giving the right to withdraw at any time, written consent was taken from all the children’s legal guardians..
: Not applicable
: No potential competing interests relevant to this article was reported for any of the authors.