Kamel, Heba
Yehia, Amr
Article History
Received: 29 June 2019
Accepted: 20 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: Ain Shams University Institutional Ethical Committee approved the study and approved to obtain a verbal informed consent (instead of written one) from all study participants. (The committee’s reference number is not available.)
: Not applicable
: The authors declare that they have no competing interests.