Al-Malt, Ayman M.
Abo Hammar, Shereen A.
Rashed, Khaled H.
Ragab, Osama A. http://orcid.org/0000-0003-0215-7629
Article History
Received: 10 March 2020
Accepted: 13 May 2020
First Online: 27 May 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethical committee in Tanta University, Egypt, under the code number (31398/02/17) on February 2017. Participation was voluntary and all contributors’ parents received detailed information about the aims of this research work, and an informed written consent was obtained prior to the commencement of the study.
: Not applicable.
: The authors have no conflict of interest to disclose.