Article History
Received: 16 July 2021
Accepted: 18 August 2021
First Online: 22 September 2021
Declarations
:
: The study was approved by the Ethics Committee of Kasr Alaini Hospital of Cairo University with approval number [21702R]. Informed written consent to participate in the study was provided by the parents of all participants (children).
: Not applicable.
: The authors have no conflicts of interest to declare.