Article History
Received: 30 November 2019
Accepted: 26 February 2020
First Online: 1 May 2020
Compliance with ethical standards
:
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Salma M. Abdel Hafez has no conflict of interest. Rania M. Hathout has no conflict of interest. Omaima A. Sammour has no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.