Received: 25 March 2020
Accepted: 13 November 2020
First Online: 28 November 2020
Ethics approval and consent to participate
: This study was performed in line with the principles of the Declaration of Helsinki, ethics approval of the study was granted by Institutional Review Board (IRB) of Menoufia University, Egypt (Proposal code: R.19.12.681). Written consent from parents was obtained for study participation before enrolling the patients.
: Not applicable.
: The authors declare that they have no competing interests.