Ahmed, Omar El Farouk http://orcid.org/0000-0002-4287-1184
Galal, Ahmed
Article History
Received: 13 September 2019
Accepted: 7 February 2020
First Online: 27 February 2020
Ethics approval and consent to participate
: This research was conducted upon obtaining the approval of the ethical committee of the Faculty of Medicine-Ain Shams University, in January 2016.Since this study involved human subjects, an informed consent was signed and acquired from all the participants or their legal guardians in accordance with the ethical committee recommendations.
: Not applicable. This work was entirely carried out by the authors without any external contributions.
: The authors declare that they have no competing interests.