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Article History
Received: 3 September 2021
Accepted: 20 October 2021
First Online: 29 October 2021
Declarations
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: The authors declare that they have no conflict of interest.
: Before being enrolled in the current study, all subjects` parents gave a written informed consents for participation and publication. The study plan was approved by the Local Research Ethics Committee of the Faculty of Medicine, Tanta University (Approval Code 33884/6/20), and was in accordance with the principles of the Declaration of Helsinki II.
