Hamouda, N. H.
El-Shafaei, R. A.
Article History
Received: 11 June 2020
Accepted: 16 December 2020
First Online: 13 January 2021
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Faculty of Medicine, Alexandria University in Egypt on 17 June 2019; reference number of approval: 0304350. All parents of patients included in this study gave written informed consent to participate in this research.
: Not applicable.
: The authors declare that they have no competing interests.