Rifaie, Nahla
Hamza, Tarek Mohamed Abdel Wahab
Elfiky, Yomna Hassan
Article History
Received: 1 December 2020
Accepted: 19 February 2021
First Online: 25 March 2021
Declarations
:
: Informed written consent was obtained from parents of children before enrollment in the study. The study protocol has been approved by Ain Shams institute’s ethical committee of human research on September 2017. The committee’s reference number is not available. The participants had the right to withdraw from the study at any time they wished.
: Not applicable.
: The authors have no competing interest.