Mourad, Ahmed
Jaffal, Hussein
El-Hakim, Ismaeel
El-Hakim, Hamdy http://orcid.org/0000-0001-9349-8239
Article History
Received: 11 August 2019
Accepted: 19 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The study was approved by the Health Ethics Research Board at the University of Alberta (Pro00065273).Written consent was obtained through mail from the parents of all participants.
: Not applicable.
: The authors declare that they have no competing interests.