Funding for this research was provided by:
Kasr El-Aini Hospital
Received: 1 February 2022
Accepted: 10 May 2022
First Online: 23 May 2022
: The study had been approval by the ethical committee of Cairo University and a written informed consent was obtained from the parents or legal guardians of the children.
: Not applicable.
: The authors declare that they have no competing interests.