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Authors
Soliman, Hend
Ibrahim, Amany http://orcid.org/0000-0002-0416-6222
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Article History
Received: 11 February 2021
Accepted: 17 August 2021
First Online: 13 September 2021
Declarations
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: The study protocol was approved by the ethical committee of Cairo University Hospital Research Committee. Ethics committee reference number was not available at the time this work was done. A written informed consent was taken from the parents of the study participants. The study and data collection were conformed to all local laws and were compliant with the principles of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
