Received: 18 February 2021
Accepted: 2 June 2021
First Online: 9 June 2021
: The proposal of the current study was approved by the ethical committee of the Faculty of Medicine—Alexandria University (the approval number is not available). Informed written consent was signed by all participants or their caregivers before the study. The committee’s reference number is not available. The current study is original and has not been published elsewhere in any form or language (partially or in full). Results of the current study were presented, honestly, and without fabrication, falsification, or inappropriate data manipulation. No data, text, or theories by others are presented as if they were the author’s own (“plagiarism”).
: Not applicable.
: The authors declare that they have no competing interests.